This is an interesting podcast from PRI. There is a link to the podcast as well as other links of importance at the end of the article. Then I've provided some examples of some of the languages mentioned.
(Posted By Patrick Cox On July 14, 2009 @ 1:16 pm In Europe, Podcasts, Regions, The Americas, The World in Words)
In this week’s podcast , a converation with Arika Okrent , author of In the Land of Invented Languages: Esperanto Rock Stars, Klingon Poets, Loglan Lovers and the Mad Dreamers Who Tried to Build a Perfect Language. 
Okrent has a linguistics background: she has a Ph.D. from the University of Chicago . But her interest far exceeds the merely scientific. She submerges herself, Orwell-style, into the geeky subcultures of invented language societies. Okrent holds a first-level certification in Klingon . That required cramming 500 words of this made-for-the-movies language during a Klingon convention  that she went to. And this was no ordinary convention: attending it meant sitting next to sci-fi-monster-bedecked people who insisted on ordering meals at restaurants in Klingon. And what words! Just try speed-memorizing terms like Qatlh, ngeD and wlgh. Those words mean difficult, easy and genius. The Klingon word for hangover is ‘uH.
Okrent tells many stories of people who dreamed up languages that would replace our own bastard tongues. In that sense Klingon is a small sub-set: its function was at least originally limited to a fictional universe; it was never intended to be used in the real world. Not so Esperanto , the most reknowned of the “real” artificial languages . Most invented languages are unmitigated failures, consigned to obscurity almost as soon as they are born. Esperanto is a rare exception — it’s both a failure and a success. It’s a failure because it didn’t meet the outrageously lofty objective of its author Ludwik Zamenhof : to become a universally spoken global language. But Esperanto also succeeded because over time, it has become a living language. It’s still around today , more than 120 years after its conception, and it has even evolved with usage.
Klingon and Esperanto are just two of dozens of languages Okrent discusses, from John Wilkins ‘ 17th century Philosophical Language to Blissymbolics and Láadan , a couple of 20th century attempts to fix the supposed evils and omissions of natural languages .
The vast majority of invented languages from Lingua Ignota  (c.1150) to Dritok (2007) languish in near-total obscurity. But they tell us much about how we think, how we do not think, and how we love to blame language for our own shortcomings.
URL to article:http://www.theworld.org/2009/07/14/esperanto-klingon-blissymbolics-and-900-others-why-we-invent-languages/
URLs in this post:
 podcast: http://184.108.40.206/pod/language/WIWpodcast62.mp3
 Arika Okrent: http://arikaokrent.com/
 In the Land of Invented Languages: Esperanto Rock Stars, Klingon Poets, Loglan Lovers and the Mad Dreamers Who Tried to Build a Perfect Language.: http://inthelandofinventedlanguages.com/
 University of Chicago: http://maps.google.com/maps?ll=41.7897222222,-87.5997222222&spn=1.0,1.0&q=41.7897222222,-87.5997222222%20%28University%20of%20Chicago%29&t=h
 Klingon: http://www.bbc.co.uk/dna/h2g2/A744860
 a Klingon convention: http://www.kli.org/
 Esperanto: http://www.uea.org/
 artificial languages: http://en.wikipedia.org/wiki/Constructed_language
 Ludwik Zamenhof: http://en.wikipedia.org/wiki/L._L._Zamenhof
 It’s still around today: http://esperanto.net/info/index_en.html
 John Wilkins: http://www.cl.cam.ac.uk/%7Erja14/wilkins/wilkins.html
 Blissymbolics : http://www.blissymbolics.org/
 Láadan: http://www.sfwa.org/members/elgin/laadan.html
 natural languages: http://en.wikipedia.org/wiki/Natural_language
 Lingua Ignota: http://en.wikipedia.org/wiki/Lingua_Ignota
 Dritok : http://kryslan.pbworks.com/Dritok
 Listen: http://www.theworld.org%20http://220.127.116.11/pod/language/WIWpodcast62.mp3
Esperanto was designed to be extremely consistent and easy to learn. As such, Esperanto employs a grammer-coded system. Here are some examples of how it works:
Autonomy estas instruistino.
Autonomy is a teacher.
Autonomy estas scienca intruistino.
Autonomy is a science teacher.
Autonomy instruas bone.
Autonomy teaches well.
Estas du komputiloj en la hejmo de Autonomy.
There are two computers in Autonomy's home.
-n: object noun
Autonomy esploras la interreton.
Autonomy surfs the Web.
-i: infinitive verb
Autonomy esperas log^i sur Marson.
Autonomy hopes to live on Mars.
is: past tense
Autonomy helpis designi interplanedan kosmos^ipon.
Autonomy helped design an interplanetary spacecraft.
-as: present tense
Autonomy helpas designi interplanedan kosmos^ipon.
Autonomy helps design an interplanetary spacecraft.
-os: future tense
Autonomy helpos designi interplanedan kosmos^ipon.
Autonomy will help design an interplanetary spacecraft.
Helpu nin designi interplanedan kosmos^ipon, Autonomy.
Help us design an interplanetary spacecraft, Autonomy.
Ni havus interplanedan kosmos^ipon se Autonomy helpus nin.
We would have an interplanetary spacecraft if Autonomy would help us.
-int-: past active
Verkinta marsan vojag^an simulilan programon, Autonomy riprozas.
After Having completed a Mars flight simulator program, Autonomy takes a break.
-ant-: present active
Verkanta marsan vojag^an simulilan programon, Autonomy ne havas tempon por ripozi.
As Autonomy is writing a Mars flight simulator program, she has no time for a break.
ont-: future active
Verkonta marsan vojag^an simulilan programon, Autonomy studas multe pri tiu temo.
As she is about to write a Mars flight simulator program, Autonomy studies much about the subject.
-it-: past passive
Marsan vojag^an simulila programo verkita per Autonomy.
A Mars flight simulator program written by Autonomy.
-at-: present passive
Marsan vojag^an simulila programo vertaka per Autonomy.
A Mars flight simulator program being written by Autonomy.
-ot-: future passive
Marsan vojag^an simulila programo verkota per Autonomy.
A Mars flight simulator program about to be written by Autonomy.
dis-: dispersal or distribution
Dissendi (to broadcast)
ek-: sudden or brief action
Ekvidi (to glance)
ge-: both sexes
Geastronau^toj (men and women astronauts)
Malproksima (far away, distant)
mis-: wrongly or mistaken
Misinterpreti (to misinterpret)
re-: return or repetition
Refari (to remake)
-ad: continuous action
kuradi (to jog)
-aj^: concrete manifestation
-an: member or inhabitant
-ec: abstract concept or quality
kosmos^ipego (humongous spaceship)
konsentejo (land of consensus)
-er: smaller unit
salero (grain of salt)
kosmos^ipestro (spaceship commander)
-id: young of an animal
-ig: to make
terigi (to make Earth-like)
-ig^: to become
terig^ (to become Earth-like)
-il: tool or machine
instruistino (female teacher)
-ism: theory or system
scienculo (science guy)
NUMBERS IN ESPERANTO
1 unu; 2 du; 3 tri; 4 kvar; 5 kvin; 6 ses; 7 sep; 8 ok; 9 nau^ 10 dek; 11 dek unu; 12 dek du; 13 dek tri; 14 dek kvar; 15 dek kvin; 16 dek ses; 17 dek sep; 18 dek ok; 19 dek nau^ 20 dudek; 30 tridek; 40 kvardek; 50 kvindek; 60 sesdek ...
100 cent; 200 ducent; 300; tricent ; 400 kvarcent ... 1,000 mil 10,000 dekmil 100,000 centmil 1,000,000 miliono
1,000,000,000 biliono 1,000,000,000,000 triliono
Blissymbolics is a symbolic, graphical language that is currently composed of over 3,000 symbols. Bliss-characters can be combined and recombined in endless ways to create new symbols. Bliss-words can be sequenced to form many types of sentences, and express many grammatical capabilities. Simple shapes are used to keep the symbols easy and fast to draw.
"I can't speak Láadan but it's a beautiful language"
Notes: Láadan is a constructed language invented by science fiction author Suzette Haden Elgin. It is interesting linguistically because it aims to eliminate the perceived sexism of Western languages by including particles that allow speakers to unambiguously convey how they feel about every statement.
Qapla' [qXAp^h'lA?](farewell in Klingon)