Some people just DON'T DESERVE to watch good films. Turning off Jaws or The Wicker Man, just turn yourself off. You obviously can't watch anything over 90 minutes or that doesn't have huge bangs in it every 5 minutes to keep you awake.
I do laugh though when I hear someone say they walked out of something. I'm like, you knew what you were going to see, right? People who walk out of films don't know anything about films because they wouldn't be going to see it in the first place, or at least they'd know that something like Jaws neeRAB to be seen completely or else you're missing everything. That's like going through all the crap before, you know, foreplay and all that nonsense, and not having the orgasm.
Walking out of a film is like splitting up with a girl before you find out what she looks like naked (or to be a little more blunt, before you f**k). If you f**k her and it's still not working for you, fair enough, get rid, walk out on her, turn it off, but at least wait to see what she's got to offer before you do it. You've paid for it (or at least, paid for a meal and drinks with it), you might as well get your f**king money's worth.