I started looking into Lisp again after reading Paul Graham's essays. In college I did part of the problems on SICP and quite enjoyed the book. Even got my copy autographed by Professor Abelson when I visited MIT back in 2002.
My experience is mostly in C, C++, Python with some Tcl sprinkled in, and I have worked with PHP, Perl, Java, etc. So when I started getting into Lisp, it seemed kind of weird that Lisp was so superior to these more common languages. But the more of Lisp I study, the more it seems accurate.
An interesting thread about this subject happened (yet again) on comp.lang.lisp, and was mentioned in Bill Clementson's blog. My favorite quote in the whole thread was:
"Unfortunately, the success or failure of a computer language is often dependent on factors unrelated to its technical merits (...)"
S. H. Valentin in "The Computer Journal", Vol. 17, No. 4, p. 331
So there are those who dismiss Lisp, based on its small "market share". There are those who love Lisp and would do almost anything to not have to use a less powerful programming language. As for me, I'll continue diving into Lisp, hoping to someday use it in our much-dreamed startup.