I normally watch a movie after hearing good about it from others. In TV I start watching and in minutes I come to know whether it is worthwhile or not. If it is not worthwhile, I change the channel. So I was never forced to watch a worst movie.
The Sound of Thunder is quite possibly the worst movie I have ever seen. With the budget that it had and the decent actors starring in it, for it to be that bad makes me want to vomit each time I think about it.