Great, great, great fun. A lot of cool stuff apart from the obvious sublime happiness of a (the!) multi-Doctor story. Time Lord lore! Omega! The Doctor being forgiven! The Brigadier adamantly refusing to believe he's a character in a scifi show! UNIT family (minus Yates) finally together inside the TARDIS! Quite a bit of cool shots in this story as well. The 'mental fight' between the Doctor and Omega was very clever, the anti-matter creatures looked great. That shot where we see the Doctors behind Omega when he lifts his mask and there's nothing there? Cinema.