I agree. While interruptions in something like watching a movie in the theater might break my concentration for several minutes, I find context switching to help my productivity at work. I can get stuck on a problem without a distraction where changing my focus briefly usually helps give me a fresh perspective and allows me to solve the problem faster.
This is actually a good point. Something that is fun and engages my mind when it's dulled and flat is actually quite a useful tool. When I get back to work I am much more switched on.
I think you just need to remember to define your breaks properly.
