Last Friday, I went to see Spiderman 3 while I was in AZ. My brother-in-law had managed to get 4 free tickets for opening night, so I went with my brother, my sister, and my brother-in-law. We lined up at 9pm for a 10:15pm show. The previews finally started at 10:30pm. The first part of the movie wasn't so bad, but then it went downhill fast. It would've been a better use of my time to stand in line for 90 mins, then turn around and go home. Wasn't worth the price of the free tickets.
Your 10-year-old son may beg to differ! ;-)