Moses is voiced in this by the excellent Val Kilmer, with a voice cast featuring Michelle Pfeiffer, Sandra Bullock, Patrick Stewart, Danny Glover, Jeff Goldblum, Steve Martin, Martin Short, and many more.
Along this same line is another Dreamworks animated feature set a couple of hundred years earlier, that shows how the Hebrews came to be in Egypt in the first place, with Ben Affleck voicing Joseph, the King of Dreams:
Though I'm not real big on musicals, I love these two movies. At the turn of the Century I was very excited about what Dreamworks would do next, looking forward to the animated stories of King David, King Solomon, et. al, but these never materialized. Dreamworks seems to have caught on to the fact that exciting old Bible sagas don't play as big at the box office as classics like Chicken Run and the Shrek series.