Imax is a very high quality theater, it's kinda of like going to the high def movies.
On a side note I never got to see TLK in the theaters, first time around I was too young and second time my family had financial issues. SO I AM REALLY EXCITED!
Hm... if TLK ever comes out in 3D, will this have to happen in 2011? 0_o Might take a while, but oh well. We'll have to wait and see. This is so exciting!