I have a lot of favorite games, but not a lot that I keep going back to, remember fondly with tons of nostalgia and rose-colored glasses, but not a lot that I keep constantly going back to, and probably even less that live up to my own internal hype. One that stands out immediately in my mind is Saints Row 2
The character stories are weirdly deep and dramatic considering how zany and comedic the game can tend to be. The combat and world are entertaining and engaging. There's just something about it that is so far beyond a GTA clone, and not to be elitist, but I don't like GTA anything, and this game is actually good.