A couple of major points to allow some guidance, budget, room size and are you aflicted by Rainbow effect on DLPs, once you have those two we can start focusing on particular brands/models.
Edit, in response to geekiegeeks comments below, the Panny is also top of my list unless you want to trump up $5k for the new Sony SXRD VPLHW10, these are pretty amazing, I have not seen them listed here yet, but saw one in operation in Brisbane recently, most impressed, previously SXRD units started around $8k.
Personally I would recommend Epson or Panasonic LCD.
I have a Panasonic PT-AX200 that I got for $2000 from Harvey Norman. Its bright enough that you can use it with the lights on. It is also very versitile for room placement as it has a large amount of lens shift.
If you can afford it get a 1080p model but if not a 720p will still look fantastic. I use mine for movies and general TV (Freeview HD) and I'll never go back to a standard TV.
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