Slate has a great article about... what I just wrote in the subject line. I'm not gonna repeat myself, people! Anyway, awful ads like these are why I'm happy to say that I don't own a television (although I do own a Slingbox, so I can cheat).
My "favorite" was the incredibly obnoxious Visa commercial, which as a Slate reader points out, reminds us that "we are mindless automatons à la the workers of [Fritz] Lang's Metropolis." A man dares interrupt the human-assembly-line dystopia by paying with cash? Off with his head!