these arnt serieses but my favorite yuri scenes are bleach : the orahime x matsumoto naked hug and tickling, love hina : the matsumi x naru bath scene and kiss, and the countless times girls get groped by other girls in manga and anime

Okane Ga Nai
Gravitation
FAKE
Loveless


All I can think of right now.

Oh! and for yuri:

Kashimashi Girl meets Girl
Maria watches over us


Those are the only two I have watched so far!