Excel Saga was hilarious, but a bit too... pointless. It lacked a story that captivated me.
Dead Leaves was lulz, but I didn't really like the drawing/editing style. Definitely some funny lines in it, though.
Going to check out the other suggestions, thanks.
Edit: Pumpkin Scissors looks promising. Just can't decide whether I should watch the dubbed or original version.
Edited, Apr 16th 2011 1:46am by Mazra