Uzumaki is a Japanese horror comic, published in America as three volumes. It's fantastically done, and you should pick it up only if you feel like vomiting for three straight days. (More at volumes 2 & 3 than at volume 1.)
Regardless, judging by your not wanting a sad comic, I'll reccomend a comedy. Pick up "Hey, Buddy!" by Peter Bagge. It's the first Hate volume, and it's hysterical.