Would love to see people from Lord of the Rings:
David Wenham
Billy Boyd
Viggo Mortensen
Sean Bean etc.
Castmembers from Lost!
Peter Davison - The fifth Doctor (and Tristan from All Creatures great and small )
I would love to see David Tennant, but I know there is 0% chance of him being there... (unfortunately)
John Barrowman! (LOVE him!)
Gareth David Lloyd
James Marsters
-Torchwood cast
Doctor Who cast
Peter Fascinelli
Twilight cast members
Alan Rickman
Star Wars cast members