Love Hina is a full fledged romance/comedy.
It centers around a student trying to get into a university because of a very old promise.
here's a page with a more solid description;
Linkage..
(oh and unlike the agerating suggests it doesnt really contain nudity -.-*)
Then theres Black cat, a more action oriented anime with a decent amount of humour involved.
You can find that one on the same site, infact you can find a decent description of most animes there.