Series 2 includes Mark Hammill, Tony Hawk, Lucy Lawless, Britney Spears, and Maggie Simpson in Pink Jumpsuit along with the three members of The Who - Roger Daltry, Pete Townsend, and John Entwistle.
Series 3 was just announced.
Wave 3, which is slated for release in June, includes Stephen King, Leonard Nimoy, Bret "Hitman" Hart, Penn and Teller and R.E.M.
Hope Series 4 has Aerosmith. Larry King, Ringo Starr, Neil Patrick Harris, Brooke Shields, and Johnny Carson.
So many possibilities....