My favorite ones would be=
1. Anne Robinson (to aggravate and annoy housemates)
2. Cathy Burke (is quite funny)
3. Anjelina Jolie (to keep Anne from thinking she can be attractive)
4. EMINEM (I don't know why, I think it would be quite comical)
5. Lennox Lewis (to keep EMINEM in his place)
6. Mike Tyson (to fight Lennox Lewis)