Back in the days (~10 years ago) in Sweden, we only had two TV channels with no commercials. Back then it was actually exciting to go to a movie and see *gasp* commercials! It was so very very capitalistic and decadent and American. Now it's just boring.
Anyways, we get about twenty minutes of commercials and previews, movie tickets are from ~$11 to $17. I don't want to know what a ticket would cost without the commercials. So, to me it's a neccesary evil.