I just saw Avatar today. WOW! IMAX was GREAT, 3D was also great, but don't forget the movie itself was really outstanding. The scenery (albeit CGI) was gorgeous - especially in IMAX 3D.
The plot was moving. A real treat for the imagination. It has something for everyone - SciFi, battle scenes, romance, adventure, and a really touching ending.
I loved it.
P.S. I may someday replace my Dare with a Droid, or whatever more spectacular phone comes out between March (early replacement) and July (2 year anniversary).