That's a sweet assortment of new toys, vp8000 - PS3, Wii, 990, and 7700!

I generally recommend against folks trying to use TV speakers in surround systems specifically because the wiring and use gets so complex so quickly that it ends up being simpler to rely on the surround system for audio all the time. Plus it sounds better. After all, if you are trying to get audio from the 990 to the TV, you've already got the 990 turned on. Is there a reason I'm missing to want to get audio of any sort into the TV? If so, is there a reason that it has to be in the digital domain?

The satellite and PS3 video going straight to the TV should work fine. You could run both through the 990's DVI switching, which could reduce the amount of switching between TV inputs you had to do - but you'd still need to switch from one HDMI input on the TV (for the satellite and PS3) and one component input on the TV (for the Denon 2800 and Wii).

You'll want to have an optical cable handy to run from the PS3 to the 990, just like you're doing with the satellite receiver and 2800. The Wii, I believe, only has analog audio out, so it'll go right along with the composite video into one of the 990's inputs.

The projector does present a video challenge. I can come up with a few schemes that would get at least some of your sources piped to the projector, but it would come at the expense of having them readily accessible to the Toshiba. Are there any specific sources that you most want available to the projector?