I would add the following:
1. A single RG-6 cable for composite
2. 2 pieces of RG-6 for s-video (with s-video adapter)
3. 3 pieces of RG-6 for component (HDTV is your friend! Better DVD quality as well)
4. At least 1-piece of CAT-5, you never know when you may want to add some control to this thing.
5. If you think you might build a home theater PC or hook a computer up, you can run an additional FIVE pieces of RG-6 for a computer hookup.
In lieu of a ton of cables, or in ADDITION to a ton of cables, I would definitely try to get at least one piece of 3/4" conduit to the projector location.
This is all based on you finishing up the walls so you can't run any cables later on of course.