If it has a serious weakness, (besides the non backlit remote), that would be its very limited placement flexibility due to a combination of limited zoom range 1.15:1), short throw lens, and no lens shift. At least the fixed lens offset is moderate.
Still, it should ceiling mount fine in most rooms, it's just going to dictate where!
As I have been writing this summary, I had on Hitchhiker's Guide to the Galaxy on Blu-ray.. Once again, skin tones looked excellent, the few, cool space scenes had very respectable darks, and the picture had a lot of wow factor.
The difference between the Z17000, and other favorites of mine, like the Epson 8700UB, however, is that with this projector I can put on the glasses, and enjoy the Prince's Trust Rock Concert (with Clapton, Queen, Dame Edna...) or explore outer space with the Universe in 3D. I, who watches/listens to a lot of music videos, am really enjoying the 3D experience. Really! I must complain though, Sharp needs lighter, more comfortable glasses. Theirs aren't the worst around, but at CES I did see some reasonably light and comfortable models with some LCDTVs.