Ah, yes. Prince of Egypt.
The first thing I remember is not the imagery, though; it's the opening music, which is extraordinary. The whole score's great stuff, orchestrally and vocally; Oscar-winning, in fact (though why anyone would listen to the Houston/Carey version of "When You Believe" rather than the one that's used in the film is far, far beyond me).
Turning to the animation itself, the opening is a spectacular on that score—especially in the way it compresses the openings of the story into a visually-engaging yet easily-digestible prologue. The Red Sea sequence is powerful stuff, as well (for which I must reiterate that Zimmer shoulders much of the blame), and the last plague remains one of the most creatively imaginative, deeply unsettling, and profoundly sorrowful things I've ever seen. (The thematic backbone of the film—the brotherhood and conflict between Moses and Pharaoh—is really thoughtful, provocative stuff. Great example of a film that's both explicit in its Biblical roots and influences, yet surprisingly subtle in its explication of them.)
It's the finest thing Dreamworks Animation did in those early years, in my opinion. And it's not particularly close, to be honest. Only significant flaw? Using Kilmer for both Moses and God, because the Burning Bush sequence is super-weird. (Oh, and the aforementioned pop-star-riddled version of that joyous, anthem-y, Oscar-winning song. Ugh.)
It's on NETFLIX INSTANT.
Born into slavery but raised as the son of a pharaoh, Moses accepts his destiny: to lead the Hebrews out of slavery and into freedom.