At Toys R Us, they have a set of 4 wireless buzzers for the iPad that go by the name Duo Pop. They're compatible with a certain set of iPad games, which you can find on the app store by searching for Discovery Bay Games. The buzzers go for $40. They also have this other device, called Duo Plink, that works with the company's "wagering" games. Duo Plink sells for $30. None of these are going to matter (to me, at least) if they don't get some decent licensing and/or some solid trivia games to comply with the devices.
On another note, Toys R Us has a board game called Zero, which looking at the rules, resembles Pointless quite a bit. The game is made by University Games and goes for $25.