Heh...you didn't realize that television networks are now commercials with a show thrown in to keep you interested, did you? The other night, I fast-forwarded through a seven-minute commercial break during an hour-long show. It's getting kind of ridiculous.
No really...advertising is the source of cash. That's why it's on everything, everywhere. The only reason TV shows really exist is to keep you watching the ads.
I'm more pissed off when I buy a DVD and it, too, has ads at the beginning.