There are few rides that I wouldn't do two, or more times, in one day. Rides that we often repeat:
MK Jungle Cruise (once in daylight, once after dark), Pirates, Haunted Mansion, Big Thunder, Splash, Buzz, People Mover. Buzz is especially repeatable since the results are different every ride.
DHS Star Tours, and TSMM are the two that we tend to repeat in DHS, though we have not been back to the park since they started tearing it up.
AK NRJ, FoP big time, Kilimanjaro Safaris (again, once during the day, and again after dark)
Epcot Soarin', Test Track, Spaceship Earth, Journey into Imagination, Living with the Land, Frozen Ever After.
Those are the rides that we regularly repeat, sometimes quite a few times in one day, but as I said above, there really aren't many rides that we won't go on a second time if the opportunity presents it's self. We generally go into the park with a list of rides that we want to accomplish. Once we get through that list, then it is a matter of what comes up. If we happen upon a ride with a short standby, we will go, maybe two or three times if the standby stays short. If we find a ride with a FP time that is close, then we will grab that FP and ride.