Pause and Toss: Sandra Bullock
Sandra Bullock has the reputation of being the girl next door, but there is a reason that a lot of guys want to give her the "high hard one".
Maybe we all want to see her sans clothes is because she has the wholesome look and the same kind of roles. Then when she married Jesse James (from OCC), everyone went "well, she has a wild side that we didn't know about."
Either way, she, like many actors in Hollywood have done hard or soft core sex scenes. Some just do the photos. In the case of Sandra Bullock, she did a soft-core porn scene...while you don't see anything, the act she is performing is worthy of an actress who appreciates a nice afternoon in bed.