I found that Hotel Rwanda, while a good film, was far too sensationalized in Hollywood-fashion.
For a more realistic version of the events, I'd suggest watching Shake Hands with the Devil, a film based on the autobiography of Romeo Dallaire, (on whom the Nick Nolte character was very loosely based).
It's still in post-production, though....
[I'm likely also more biased towards this film because my cousin Jimmy is a co-star in it.... 😛 ]