For me, 2006 has been a slow year for games. Only bought 2 console games this year (apart from wii sports), but bought a fair few DS games.
1) Zelda - only played the 1st 2 dungeons but I can already see it as my game of the year.
2) Shadow Of The Colossus - Great game, brilliantly executed and good music too!
3) Phoenix Wright - love it to bits, even if it's not really a game.