-if you're planning on watching Higurashi no Naku Koro Ni, you can try to solve the mystery even though the anime doesn't have as much clues as the Sound Novel.
-Slayers Revolution and Evolution-R if you want a good dose of humor.
For manga:
-Chrono Crusade (especially since Rosette is on par with Chrono on awesomeness)
-The World God Only Knows - really funny and parodies several games.
Proud Member of the Mega Mario Movement Yummy Yoshi Yankees