I disagree strongly with Lisp being the language of the future, especially in terms of web based stuff. AI has been around donkey years, Alan Turing anybody? Father of the computer and the turing test.

A language no-one's considered but growing in user-base and power is adobe's actionscript, version 3 is a very real progamming language, and as the future appears to be heading in the mobile direction with rich media interaction, seem's like a real contender for when browser vendors add support.