Triple lock

Some chat show - and I really don't care which one, as long as it's not Alan Carr - has to get Jonny Lee Miller, Robert Downey Jr & Benedict Cumberbatch on at the same time. As long as it didn't make the universe implode.

(Although, to my friend who suggested Jeremy Brett too, no, I'm talking about "somewhere within the realms of possibility". Although if we're going to stop eliminating the impossible, let's throw Basil Rathbone and Arthur Conan Doyle into the mix too...)