Neverball is an open source, freely downloadable clone of Sega’s Super Monkey Ball (which is, of course, name-checked in a WoW quest),
Like Super Monkey Ball, you have a ball that you roll around by tilting the floor in different directions. There’s also a game called Neverputt included which uses the same physics engine, but is a miniature golf game.
Definitely worth downloading and giving a whirl.