N-Naomi Watts is playing Narcissa Malfoy? D-Draco is the love child of Jason Isaacs and Naomi Watts?
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Also, rather self-explanatorily:
Jack Davenport eating cookies. (Unfortunately, in my opinion, the "plot twist" doesn't really work - the continuity is too good...)
Jack Davenport as an aristocratic hamster.
Jack Davenport ranting about naked women. ETA:
Jack Davenport is a Queen fan and met Freddie Mercury when he was 13! I think this may explain the "Gay clubs offer better dance music" line.