Ok, anime ideas right off the top of my head here.....
If your looking for an anime just for laughs and not much for story, how about Azumanga Daioh or Lucky Star.
If your looking for a tearjerker/romance w/ great comic relief thing, try Kanon (2006 version), Clannad, Clannad After Story, or H20 ~Footprints in the Sand~. Bokura ga Ita has a good reputation, but Ive only just started seeing it.
If your looking for an anime w/ action w/ a plot, hows about Code Geass or Rurouni Kenshin. Id add Bleach, but who hasnt seen that?
For horror or psychological/mindfuck needs, try Higurashi no Naku Koro ni, Elfen Lied, Death Note, Paranoia Agent, or Neon Genesis Evangelion
Any other ideas I can throw into the mix...
Shakugan no Shana, Toradora, Zero No Tsukaima, Pandora Hearts, Yu Yu Hakusho, Bakuman (manga), Full Metal Alchemist (the remake or original are fine), The Melancholy of Haruhi Suzumiya, or Nagasarete Airantou.
These are all ideas that just come right out my tired, sleepy head atm.
Oh and for a lulz suggestion:
Futari Ecchi, something you should use SS.
lol.
^ anyone interested, its literally a manga version of a relationship/sex guide. Seriously, the things Ive seen or heard on the internet.... But I think I turned out fine...