These are the sites that keep me up at night and make me want to be a better photographer:

http://www.zachgold.com/
http://www.eccentris.com/splash.htm

http://www.calypsodesigaldi.com/ check out stephen lyons but the others are good as well.
http://www.giulianobekor.com/    Check out his behind the scenes stuff .
http://www.yanickdery.com/
http://www.demarchelier.net/home.html

thats all i'll post for now, i have more so contact and i'll send them over.

One addition

http://www.managementartists.com/

some of the best of the best...

Melvin Sokolsky

http://www.melvinsokolsky.com/

I'd add www.seankearnen.com   I I hope I've spelled that correctly. One of the most creative guys I've ever met.