Nothing wakes you up in the morning like some cartoons.
My favorite at the moment is Penny Arcade. For anyone who hasn't seen it, it's about 2 video-game obsessed kids. Pure gold-dust -- go kill an hour reading through their archive now.
After that, I still can't get up without my doses of Dilbert (see my avatar) and Garfield, and if that's not enough, some Foxtrot.
Then for some left-wing political satire, I like Tom Tomorrow's toon, This Modern World