I went here to see Dark Knight on the IMAX screen.  Screen size: not impressive, barely noticed it was bigger than your normal movie theater screen.  Sound: Amazing, it was quite stunning.  Seating: not impressive, no leaning chairs, they were just your average movie chairs.  Auditorium temperature: a little warm.  I really wish they would have put Dark Knight on the AZ mills IMAX.  It was not really worth the extra money and drive for me.