I'm also an Off-Kilter fan, and would gladly sit through all five daily shows! I can't get enough of them!!!
Other activities we've enjoyed - mini-golf, a behind the scenes tour, visiting resorts we've never stayed at, eating, shopping, people watching, renting a boat, spending some time in the rose gardens at MK or Epcot. Sometime we just ride the monorail around for awhile.
Every trip, we have to touch our picture tile at the entrance to Epcot. And we try to take very form of transportation sometime during the trip (car, bus, monorail, train, and boat) Sadly, since we don't drive to the parks anymore, don't get to ride the trams ;-(
Lin