Noting else quite does it for me like T2 does/did, I know a lot of it is nostalgia but the game is also just clean. Somehow it looks and feels better than many modern games to me. I still think the UI (buggy as it was sometimes) looks great, it still feels futuristic and game UI's 10 years later look like trash.

Having in game mail, IRC, and an actual clan system I think was awesome and ahead of its time as well.