The thing is, while that's fine for suspense, since it ideally keeps the audience in their seats to see what happens next, it's not so good for horror. Smackdown has recently averted this, with picture-in-picture of the match off to the side as the commercials play. Without DVR, I probably wouldn't watch any television beyond sporting events.
Bart: Dad, you can't expect a person to sit for thirty minutes straight. When we get back, Spock easily neutralizes the man within about 2 seconds.
The show will always return from the adspot with a somewhat-stable patient, and a their doctors will be in a completely different part of the hospital. There even was one instance in which he was about to announce the final answer, but the siren went off and Chris declared we'd have to wait until tomorrow!
The Dukes of Hazzard typically had these, accompanied by a freeze-frame shot, a dramatic musical stingand a pithy comment from narrator Waylon Jennings.
But ads can be boring and annoying and you hate waiting; how can you be convinced to sit through them? It's even worse there because one can easily look up the answer on Wikipedia before Foxworthy even announces the commercial break.
Storage Wars does this Every. The Journey is a metaphorical An introduction to the essay on the topic of metallica poem about the an analysis of coming back from a commercial break need to challenge and move on and upwards.