When I'm at the office late, I like to take off my wing tips and put on a pair of white sneakers, though I'm still wearing a suit and tie. I hope the effect is more "Wille Brown" or even "Mr. Rogers" than it is "No Jacket Required."
RANDOMLY DEPRESSING UPDATE: No Jacket Required is ranked #1,021 on Amazon.com's sales list. Think about that - in the year 2009, there are only 1,020 albums more popular than No Jacket Required. Its more popular than Boxer, Acid Tongue, or Dear Science.