As I tended to wander around and check out other boards during my own games, I was on hand to watch the following queen sac being played by tournament winner Guy West. Lovely stuff...
Guy West - David Hacche
French Defense
1.e4 e6
2.d4 d5
3.Nc3 Nf6
4.Bg5 Bb4
5.Ne2 dxe4
6.a3 Be7
7.Bxf6 Bxf6
8.Nxe4 Nc6
9.c3 O-O
10.N2g3 Be7
11.Bc4 e5
12.d5 Na5
13.Ba2 b6
14.Qh5 Kh8
15.h4 f6
Now White forces open the diagonal for his bishop...
16.d6! cxd6
And then throws a knight into the mix to pry open the h-file...
17.Ng5! fxg5
18.hxg5 h6
19.Qxh6+!! 1-0
After ... gxh6, 20.Rxh6+ Kg7, 21.Nh5 is a very nice mate.