First game was one of my favorite RPGs of last gen (its only serious competition being Final Fantasy X and Paper Mario: The Thousand Year Door) and one of my favorite games of last gen, period. Beautiful art, great soundtrack, extremely fun gameplay and battle system, and a story that, if messy, at least had enough genuinely interesting elements and a rich enough world to keep me engaged from beginning to end. After I (finally) finish my latest playthrough of Chrono Cross, I will be starting Origins and fully expect to have my mind blown.
tl;dr Baten Kaitos is in desperate need of more love. It warms my heart to see how much it is (deservingly) appreciated here on the GAF.