Commercials at the movies

On the movie theatre commercial tip, a point of clarification: I didn't mean those slides that they show onscreen while people are entering the theatre and the lights are still up and you're trying to find your seat and not step in any movie theatre floor goo (which got all over my favorite green bag when I saw 2001 recently at the Castro and was really gross). These commercials are like TV commercials and start after the lights dim. They were loud and long and one was for Windows XP. That's what I'm talking about. One reader wrote to inform me that many large movie chains have gone bankrupt in the past 18 months, hence commercials. I'm going to investigate this a bit more…if you have any good links/info, please send them my way.