Here are some of my favorite comedy shows, and if you're ever in the mood to laugh, you can check these out for yourself.

Laugh to your heart's content! Rating
Carnival Phantasm (OAV) Very good
Cromartie High School (TV) Very good
Detroit Metal City (OAV) Good
Gintama (TV)
Kämpfer (TV) Good
Kannagi: Crazy Shrine Maidens (TV) Very good
Lovely Complex (TV) Very good
My Bride is a Mermaid (TV) Excellent
School Rumble (TV) Excellent
School Rumble: 2nd Semester (TV) Excellent
Seto no Hanayome (OAV) Very good