That does look really quite good. Also a bit sinister, which makes it gooderer. A worrying lack of Alan Alda impersonations in that trailer though.
UPDATE: Starts on BBC 2
ALSO: ooh, ooh, I can do my story that the only sketch that Peter Serafinowicz did on Smack the Pony was one that I wrote, which was pretty much from life, which means I have been portrayed on screen by Darth Maul.
ANOTHERT UPDATE: an insider informs me that the Alan Alda impression will indeed be making an appearance, hurrah!