ICO? Shadow of Colossus? God of War (I & 2)? Any sports games? Time Splitters? Okami? GTA?
PS2 was the ****. But so was the Xbox. Every system had a game I wanted. Luckily my friends and I had different tastes so I got to play them all.
You notice I didn't name those games :-)
Okami and Time Splitters, though? I tried both, and they didn't quite stick. Especially Time Splitters. I went in really wanting to like it because I'd heard so many good things about it, but the game just felt like a late 90's era FPS. And as for GTA, I'm pretty sure I'm not the only one, especially on these forums, who don't like sandbox games. I see why people like sandbox games, but I like a more directed experience in my gaming, which is probably why I like Nintendo games as much as I do. And let's face it, the PS2 didn't get any good sports games, AT ALL, until the Dreamcast died and 2K started putting out games on the PS2. EA Sports is mediocre at everything except a few of their FIFA games.
I knew that I missed Nintendo systems when I went totally apesh*t over Katamari Damacy, thinking "Oh, this is so unique, what an amazing game, it's so inventive, etc..." I freakin' loved that game at the time, though, in hindsight, it was basically downloadable game quality, being that it had only 1 game mechanic and it just used it the exact same way over and over and over again. But it was the game that made me realize "I really, really miss gameplay-focused games. I really, really miss colorful, vibrant graphics. I am so over being a graphics-whore."
Which brings me back to my point. I want my next Nintendo console to be a Nintendo console, and not another PS360 hardcore console.