2. Doctor. It's simple: lie on the couch and let your child take care of you. Wonderful for a quick rest. Bonus is seeing your kids' imagination at work. I'm amazed at the everyday items that our boys turn into medical equipment (and vice versa)
i.e. Elliot playing with a chest tube from the hospital. It's a rocket!
3. Jail. Your kid is the policeman. You are the bad guy that they put in jail. Once in jail, you just sit there and don't escape!
Honorable Mention: any game where you pretend to be asleep.