Yes, however you need to make sure that it is somewhere that people won't hit it with their heads. We have a 7'9" ceiling and we mounted a JVC RS45 projector (BIG projector) with about a 4" space between the ceiling and the top of the projector. This is above my second row of seats which is on a 12" riser, so it is like having a 6'9" ceiling. The key is that I put the projector above the seats themselves. Slight back so the you can stand up or sit down without any concern about hitting your head.
M60s,VP180,VP150,QS8s,20-39PCi,DMP-BDT210,HD-A2,JVC RS45, Onkyo TX-NR709, Shakers