Yes - Russian Ark
No - Rope
Yes - Citizen Kane
No - Citizen Kane
I can think of awesome scenes that would be even more awesome, as well as scenes that would be ruined.
Yes - Red Desert
No - Primer
Yes: Close Encounters
No: The Aristocrats
No: John Carter
Yes: Warlords of Barsoom*
*Same movie, new title. 
Oh, goddess…so much this. This is the only film to make me retch. Just thinking about picturing that one scene in IMAX 3D is making me a bit woogly.
Yes: Big Trouble in Little China
No: Monty Python’s The Meaning of Life (Oh dear, I seem to have trod on monsieur’s bucket.)
Yes: Saving Private Ryan
No: The Hunt for Red October
The summer of 1977, when SatB came out, my father, who’d never had a dog, picked up a young stray in a parking lot so it wouldn’t get run over. The dog was of unknown origin, but based on it’s looks it was half bassettat least. Dad had never even liked dogs, but decided to keep it, and named it “Fred”, in honor of Jerry Reed’s dog in the film.
Yes: Destroy All Monsters
No: Orgasmo
YES - Alien and/or Aliens. Either would be terrific in IMAX 3D.
NO, NO DEAR GOD NO - Molecules to the Max. Unfortunately, that… thing actually was in IMAX 3D. If I could go back in time and do any one single thing, anything at all - I might just unsee that movie.
Yes: Lawrence of Arabia
No: The Blair Witch Project
I’ll go with this one.
Yes - The Searchers
No - The Man Who Shot Liberty Valance