An Amazing Slav Defense

The Slav Defense(1.d4 d5 2.c4 c6) is one of the most popular openings among grandmasters.  It is a solid opening with a good reputation.  There aren't too many opening traps in this opening at the highest level.  So here is one game by two grandmasters that ended in 20 moves.  It was recently played in the 2007 US Chess Championship.