Suddenly I have become interested in learning some constructed languages. I think my interest comes from wanting to have languages other than English but being shy about learning someone else's native tongue, and also not being eager to put in the effort. Through a lot of effort, I can barely read some very simple French. Of course, being in the Twin Cities I can probably find an easy way to learn Norwegian, which I remember Barry Farber describing as a great starter language for Americans, and I, personally, have found the Scandinavian tongues pleasant to the ear, but we'll see; I am not ready to commit myself to a course of study. The constructed languages, I hope, lend themselves more to uncommitted study.
I am not talking about languages of Star Trek and Middle Earth, but Interlingua, Ido, Esperanto, etc.
(For the most part, the world seems to have adopted an inferior cousin of Basic English, known as "English." :) )
UPDATE: There seem to be more resources on-line for the Ido language than I realized at first, so my interest is now mainly in Interlingua and Ido. Esperanto's use of accent markings is enough to push me towards the other languages.