Off the top of my head:
Vampire Rp's. Cliche, but prhaps we shall discover something original in them.
The first; Vampire male recently changed, somewhat burdened and troubled when surrounded by humans. Upon encountering his brother and his new relationship interest, the man develops his own interest in her.
The second; An abusive father sends his teenage son away. Enduring torture and eventually being forced into change into a vampire, he returns for his younger sister, only to discover that his father's girlfriend has enthralled him...
Any of your own ideas I would love to hear.