Look, the fact that you can watch a good movie on your laptop at a Starbucks in twenty minute installments over a two week period and still like it is not the point. The point is not, “Seeing a movie on the screen is the only way to enjoy a movie; in any other format the movie will suck.” That is NOT the point. Of course if the movie is good–well, if it’s a certain kind of good–you can still enjoy it.
But some movies synergize with the theater experience to make a good movie even better. Avatar, in Imax3D is an overwhelming experience. On a laptop in 2D, the story will be in the forefront and the overall experience will be backgrounded. It may still be enjoyable, but it will not be the same experience. Now not every movie is Avatar; comparing other movies to Avatar is akin to godwinning the thread, IMO. But still, it’s an example–an extreme example–of some of the value seeing a movie writ large vs. on an iPod.
Some of the great masterpieces of cinema build a tension from scene to scene. If you were to watch The Passion of Joan of Arc in fits and starts, your emotional arc will not follow the movie’s emotional arc. You’ll “come down” with every distraction. That’s not to say you won’t be impressed by the surface power of Falconetti’s performance, but you won’t experience it with her to the same extent. Hitchcock suspense is a wonder of timing; of building a tension arc through the movie. Every time you pause, you risk undermining the experience of that arc.
When you watch a movie on a laptop with interruptions, the movie lives or dies primarily on the literal level of its plot. The other subtleties will still be there of course, but it’s still easier to watch a movie that relies entirely on plot mechanics in this manner; movies that require more of an immersion, or a suspension, or whatever, suffer from being brought down off the screen.
Watching a movie on a small screen with interruptions emphasize mostly WHAT happens in a movie, and can diminish the importance of HOW or WHY it’s happening for some movies.
Or, if you lack imagination, you can just watch it over and over again, and eventually be led to the subtleties, like a blindfolded man feeling around for his car keys. If he keeps at it, he’ll eventually find them. Me, I’d just take the blindfold off. But then I lack imagination.