well, here is a good thread to start:
http://tech-forums.net/showthread.php?s=&threadid=31371
i contributed the lisp description.. as it is my personal favorite language

if you scroll down, you'll see some info regarding relative power of different languages.. and articles written by Paul Graham
i think that explains for itself

i personally have learnt perl/python/c/java/lisp/some ASM, i think those languages are varied enough to justify my arguments in lisp in that thread
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lisp hacker

running: FreeBSD 5.4 - still learning

develop with: SBCL + emacs for lisp, Anjuta IDE +gcc for c, SPE for python..
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