FF IV FTW!!!
Okami has been in my PS2 almost nonstop since I got it. I am currently on my second play through it (about 60hrs alltogether) and I am still not tired of it. Great story, gameplay, characters, and graphics. 10/10 (best of '06 IMO)
Final Fantasy XII is pretty much the only other game that has been in my PS2 since last September. I love the story, but I can't seem to fall in love with the characters the way I have in previous FF games. Beautiful game though. Over 70 hrs and I still haven't beaten it yet. 8/10
Shadow of the Colossus hasn't been in my system much since I beat it late last year, but whenever I do put it in, I usually play for a couple of hours, even if I am just running around the countryside. For anybody that says game can't impact you emotionally, play through this game. This game has one of the most heart-wrenching endings I have ever witnessed, game or otherwise. 10/10 (best of '05 IMO, with RE4 in a close 2nd)
Rez is one of those game where I have to be in just the right mood to play, but when it is right, it is awesome. One of the most artistic games I have ever played, and the music is pretty good (love the song on lvl 5). This game rocks hard with a good stereo setup, and even better with headphones. The only flaw I see in this game is the fact that it ends. Another 10/10.
To those Drakengard fans way back in the thread, the acceptable language rules in the forum don't allow me to discuss the events that lead up to the ending of that game. What starts as a simple "Rescue your sister from the clutches of an evil Empire, turns to, well... "what happens at the end of the game". Definently not your cookie cutter fantasy story. I never could get the true ending though, as the grinding for all the weapons just killed it for me. Is the true ending worth it? 7/10 (original and twisted story, great panzer dragoon style shooter sequences, but somewhat slow dynasty warrior style fighting)
Misc games that ROCK but didn't sell well: Beyond Good and Evil, ICO, Primal, Shin Megami Tensei series, Xenogears, Vagrant Story, Outcast, Haunting Ground, and many others.
Well, time to beat FFXII so I can finally start Rogue Galaxy.