Here's one I very nearly fell for in the pub the other night. I was Black.
[Event "Pub Blitz"]
[Site "Far From The Madding Crowd"]
[Date "2008.09.18"]
[Round "-"]
[White "Somebody better at blitz than me"]
[Black "Fat Lady"]
[Result "*"]
1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Bg5 c6 7. O-O-O+
Kc7 8. Ne4
*
My hand reached for the f6 knight, intending to play Nxe4, before I remembered that my opponent was far too good to drop a piece in that way.