Diablo 2 (still the best one, imho)
Q3A
Jet Set Radio
Baldur's Gate 2
Deus Ex
Paper Mario
No One Lives Forever
Counter Strike
Legacy of Kain Soul Reaver
Anyway, late 90s early 00s had a lot of banger years with awesome new IPs dropping regularly. The last 5-10 years have been amazing for indie games, but AAA games are just fancier versions of what we already have, for the most part.