Oh man, I totally forgot about NBA Street. I don't even like basketball (let alone mainstream sports in general), but I found Street to be loads of fun.dadou_gamer said:Go for Burnout 3, Ratchet and clanks and if you like the basketball go for NBA Street Vol.2
While we're on the topic of surprisingly fun sports related games, I'd also recommend SSX Tricky and/or SSX 3, as well as the Tony Hawk Pro Skater series.
If you want good writing, it's hard to beat Psychonauts.
If you like quirky/silly games, We Love Katamari is a great pick.
Of course, don't neglect the PS1 library. Final Fantasty Tactics, Spyro the Dragon, and Tenchu are the first games that pop into mind.