Amongst my personal favorites are:
Shakugan no Shana (Fantasy, Romance, Comedy, Drama)
Fate/Stay Night (Same as SnS)
Toradora (Romance, Comedy, Drama)
Zero no Tsukaima (Same as SnS)
Hayate no Gotoku (Comedy, Romance)
Lucky Star (Slice of Life Comedy) (This one primarily if you've seen a lot of...