Roger Delgado, Anthony Ainley, Geoffrey Beevers, and John Simm are all represented. Peter Pratt is not, but Decrepit Master is covered by Beevers. Neither is Eric Roberts, which is fine -- but neither is Derek Jacobi, which is the one and only flaw in the vid.
Anyhow, it's fun stuff -- check it out! Thanks to scarlettina for the link.