I got a Epson EX70 Projector for my HT. No screen yet but even on a plain wall it gives 100" of HD (1080i) for under $600 you can't really go wrong.
If you go LCD projector also note that 2000Lumens LCD ~ 2500Lumens DLP.
If you go LCD projector also note that 2000Lumens LCD ~ 2500Lumens DLP.