Suikoden is a classic RPG franchise that I remember very fondly. At its best, its worldbuilding combined mythic power with believable societies, while Suikoden III (PS2) still stands out as one of the few video games to make interesting use of multiple perspectives.
Most of the Suikoden games are now out of print, except for the first and IMHO weakest game, available on PSN. The highly-regarded Suikoden II (PS1) is particularly rare (and north of $100 on Amazon), but this may be about to change — Siliconera has spotted a PS3 listing for Suikoden II, suggesting a PSN re-release is imminent.
Personally, I hope this turns out to be the case. I looked up plot spoilers on Wikipedia, back when I thought there was no way I’d ever play the game, and even in that highly diluted form, I was impressed by its twists and turns. This is one I’d like on my the Vita!