If it weren't so dangerous, we'd love to post video of this...
Billy has figured out that he can't get to the top of the stove via the counters, which are booby trapped with cat detectors.
And he doesn't want to jump directly up. The stove top is a grill, and not so comfortable on the paws.
But the other night during dinner, we saw him doing a chinup on the handle for the oven. Literally hooking his front paws over it and pulling himself up. I couldn't see whether his back paws were helping, but since the front of the oven is smooth glass they couldn't have been helping much.
We were impressed with his athleticism, but quite dismayed. We hope that a dish towel over the handle will close off this approach route.
Update (from Drew): The towel was on the floor when I left for work. Given how nice a towel rack the oven handle makes, we can only assume Billy experimented once Katherine came upstairs after breakfast. A shake can has been set on the towel on the handle on the door on the oven.