There's something particularly hateful and alienating about commercials. When you're watching a show or listening to internet radio, you kind of feel like you have some company, even if it isn't real. When a commercial comes on, you become acutely aware of exactly how alone you are. I can't exactly describe what does this -- perhaps it's something about the sound mixing, or the tone of the announcers' voice. Sort of like how you can tell something's a soap opera in less than a second by the unexpectedly high frame rate. Wouldn't surprise me if it was on purpose, either, as it's in advertisers' interests to make you feel scared and insecure. I mean, that's pretty much been the goal of all advertising, anyway.