I was able to view the file on my computer as well. But for some reason, no video player I had would play the sound (I didn't notice any choppiness in the video though). However, when I exported the video's sound as an AIFF through quicktime movieplayer, I ended up with a file that played fine in iTunes. And yet the AIFF file still wouldn't play in movieplayer, weird.
In addition to the previously mentioned codec, try this one as well:
3ivx. And finally, here is the codec that will get the NipTuck movie to play:
FFusion. Hopefully some day Apple will natively support DivX and I won't have to keep spraying my Mac left and right with codecs.
-Bogrh