As for the modern games... Heavy Rain, Uncharted, and Catherine. I love me some survival horror like Dead Space, and the Silent Hill and Resident Evil, but the others really break the mold and adds artistic credibility to the gaming industry.
For nostalgia purposes? Psh, when FFVII came out I was playing a way better RPG game that had more depth and story to it...and it was made by the same developers! Xenogears!!!