Well, there are some good, enthusiastic people over in the
PlayStationCollecting section, but the boards aren't as active as here.
I have fond memories of Metal Gear Solid 2, even if it was the weaker of the two PS2 installments. Even so, it's packed with Kojima's signature easter eggs. In the end, I still consider it a fun game to revisit.
I've only played a little of Oni. Most memorably, it taught me that the DualShock 2 had L3 and R3 buttons. (It was my first PlayStation console.)