Side note: With results-as-you-type now being the default even from the Google front page, isn't "I'm feeling lucky" a totally vestigial button at this point?
List > (i am feeling lucky) = http://en.wikipedia.org/wiki/Lisp_%28programming_language%29
PS: Not everyone enables scripts.
As soon as I type a letter, the "lucky" button vanishes.
http://www.pushingbits.net/posts/google-im-feeling-lucky-add...
Very useful.
That behavior alone, which for some reason nobody else replicates as a feature of their browser, kept me using FF for years longer than I would have otherwise. The FF address bar is still best in class in my opinion.