[karl100589]

Based solely on series 8-12:
Males:
Dick
Eric
Crazy James
Dan
Jeff
Matt (BB12)
Enzo

Females:
Jen
Danielle
Sheila
Renny
Keisha
Rachel
Britney

Alternatives:
Dustin, Kevin (Especially if Grodner needs to fill the token gay role)
Memphis (Especially if Dan pulls a Boogie deal and demands Memphis be there
Russell
Jessica
Chelsia
Sharon (Compensation for the guinea pig question)
Chatty Natty (BB9)
Michele (BB11)