One site I frequently go to just to check out inspiration to get me going is at abduzeedo.com. The site features really great artists as well as tutorials for artists from artists around the globe. Really good stuff in there specially this particular one called WTF Series.
“WTF Series is about things that happen to us while living a normal life… when you clearly don’t understand why those things happened! They’re usually out of the ordinary things that occur to all of us but are sometimes hard to believe. It began as an in-house joke here in the studio so we decided to make it a “Design Piece”.
“We wanted to create some funny, where people can laugh about WTF situations, and we create a poster series about it”.