manga:
Aoi Hana - the manga takes it a lot further than the anime... Fumi and Akira are actually going out right now ^^
Hoshikawa Ginza District 4 - an interesting yuri manga with an age gap... sort of an ambiguous parent/guardian thing going on but the romantic nature of their relationship
is made quite clear
Strawberry Shake - sort of a romantic comedy showbiz version of Girl Friends
Hanjuku Joshi - sort of a smutty yuri manga... but an okay story nonetheless
Junsui Adolescence - student/teacher romance
Even if We're Not Friends - nice short series (the link is to a volume of oneshots... the sequels to the main story are linked on that page I believe)
Husky and Medley - apparently based on a true story
..there's at least a kiss in all those.
anime:
Simoun is pretty pretty decent... and the main couple ends up together (and not men! a worrying possibility when you know the basic plot, lol). Lots of kissing and such IIRC... I don't really remember what the main couple does together, lol...
Strawberry Panic - really cheesy, but enjoyable if you're looking for explicit yuri.