Octopus Pie is a quirky comic based in NYC.
Jess Fink is a webcomic artist and illustrator. Her watercolor work is pretty great. Her comics tend to be more on the...risque side though. :P
Some oldschool artists that I forever admire are
(Van Gogh a la Lichtenstein :P)
Mark Rothko's abstract & emotional works:
As well I am very influenced by graffiti and cartoonish/graphic character design. I met this artist the other day at the East Atlanta Strut and fell in love with his characters:
Red Rocket Farm by Jason Thomas
Zipits Zipper Pulls - These are adorable and they are design that you can take with you anywhere!