I saw my first television commercial featuring a QR code this past week. I don't know how useful it really was, though. In a 15 second commercial, the QR code was only displayed for a few seconds -- not enough time for me to grab my cell phone, start the scanner app, and get it scanned! I suppose I could have paused my HD DVR/Cable Box at that moment and then grabbed my phone and performed the scan, or if I had been viewing a recording of a program, I could have paused and scannned the code. Still though, it doesn't seem real effective or practical to be including QR codes in television advertisements.
I searched the Web for additional thoughts on this subject:
Shin-B Music Video Featuring QR Codes (Quite interesting, and the codes work!)
Designer QR Code -- this one made TV history: