Canadians may remember "Forever Knight" about a vampire who worked the night shift, and drank cow's blood supplied by a kind hearted female coroner. This show had the BEST series finale ever. I almost fell off my chair !
Every episode also featured flashbacks to other eras in his long life. I always suspecte Angel stole the idea here, though they claimed they did not.
This show is on my "really dumb and kinda lame, but somehow I love it anyway" list ( along with Beauty and the Beast)
I hear there's a new show with a similar premise coming out in the fall. I hope its as good ( or bad) .