Another thing:
PS1 is a hard thing to narrow down 20 - 30 games, especially when Crash/Spyro are being remastered, so it would be a strange use of spaces to put any of them in there. For the N64, I feel you could narrow down a perfect list of 20 games without a "glaring" omission, but for PS1, it's really damn difficult. Lack of Gran Turismo I can see being strange considering that's one of the most successful franchises. Otherwise, there are a lot of great big ones that need to be there (FF7, MGS, RE1) and smaller ones that are dope and really should be exposed to more people (Intelligent Qube).
I'd prefer Twisted Metal 2 over 1, though.