IMAX Theater: Batman / The Dark Knight
Just know here folks, that IMAX theaters are using highly efficient active speaker systems throughout, with extremely favorable acoustical situations, in large venues, with a comparative screen size that dwarfs pretty much anything you'll find in a home setting!
Having multiple speaker arrays is needed for such a wide seating layout, for even coverage. It's not likely so critical in a small home in vironment. I find proper blance and accurate sound is more important - as quality takes priority over quantity here.
Also, omparative resolution of film is still effectively double what 1080p is - although close when you take into account other issues with film projection systems. Still, you can get a much large image with film.
All that, coupling anamorphically compressed 1080p, with high efficiency quality speakers and HD gear in a home - considering quality acoustical application and setup - you should be able to get as good or better all around with a well planned, executed, and balanced system in the home these days! That's the good news, I think.