If you don't remember Quantum Leap I feel bad for you. If you do and are saying, "but Al can't push Sam off a building!", you're right of course. But that plot device was going to be introduced in Season 6, I swear.
I have heard complaints about the episodes where Sam was a woman, some feel it was an overused gag. Personally I don't agree. Women have problems and Sam randomly leaped around into other peoples lives. So why wouldn't he leap into a woman rather infrequently? They do make up half the human population after all. Perhaps it's simply a case of statistics not mixing with TeeVee programs.