As a movie buff, there has been two wishes I would love to come true. This reaches into the magical or fantastic so it obviously can't happen. But what if it could.
1 - There are certain movies that I love. As much as I love to re-watch them, I would love to be able to watch them for the first time, so be able to watch it with no knowledge of it's artist merit or narrative. To somehow wash my mind blank of any concept of the film and to experience with a fresh train of thought.
2 - Films are often not made as they intended. This can make the film either better or worse. I wish I could watch an alternative version of the film - be it with different actors, locations, budgets depending on what was originally saught. Imagine watching Tim Burton's Spiderman or Kubrick's Holocaust epic. Or The Shawshank Redemption with Kevin Costner, or to watch The Fountain with both Brad Pitt and an $80 million budget. Every time I hear that an actor had to pull our or they were intending something else to happen, I can only wonder what the film would have ended up like.