I agree with Mac 98, Mila Kunis is hot..... I am pretty sure she did some lesbian scenes with Natalie portman.. don't ask the title of the movie... I don't know.
for female Olivia Wilde is my fantasy choice. I would tie her with a nice satin ribbon to the top of my kitchen table, I would lick some hot caramel off her body and give her squirting orgasms after squirting orgasm using just my fingers and tongue.
for a guy well Paul Wesley or David Boreanaz (no its not the vampire thing, its the eye thing....) I would want them one at a time (or together ) to do to me what I want to do to Olivia Wilde. and would really enjoy looking at said eyes looking at me from in between my legs..