You want Peter Davison? He made the damn thing. Colin Baker? He squeezed out the front door to make it to this thing. Sylvester McCoy? He ran away from The Hobbit™: The Desolation of Smaug in IMAX™ 3D to be in this. Paul McGann? He wants in. Christopher Eccleston? Well, no, but that's his problem. Tom Baker? He's totally in this! There are literally dozens of other surprise cameos, but I don't want to spoil any of them for you. Just that they will blow your mind.