Xenogears was the best RPG.  Ever.  It was an RPG for Playstation that featured many different themes, dealing with many issues that a lot of people don't like to see.  It's an anime style mecha game where much of the combat is done fromw within a "Gear", which is a giant walking battletank.  Personally, I am not a fan of mechs, but the game was simply perfect in every way.  Xenogears became Xenosaga on the PS2, and the story will be retold in 6 episodes, the way it was meant to be.  (Xenogears is part 5 of Xenosaga.)  I have not had a chance to play Xenosaga Episode 1 yet, but it's very high among my list of "must-play" games.
To this point, the Xeno games are the only ones that Monolith has made.  That's why I immediately thought of the story from Xenogears when I saw the first previews of this game.  The reason IGN is making a big deal of this game is simply because Baten Kaitos is Nintendo's answer to Xenosaga.  This game is going to go a HELL of a long ways in satisfying Nintendo fans who like RPGs.
I just recently started a new game of Xenogears, and I am almost at the part where the story of the angels is told... When I get there, I can take a series of screenshots and post them in this thread to see if anyone agrees with me.  I don't think that doing so would spoil anything about either game.