I honestly have no idea. I've never changed the channel on it in the sense that you're asking about. 80% of the time I'm watching recorded shows, and when I'm watching something live, it's something I actually want to watch. If comericals come on, you pause them and give it a head start while reading the empeg board on your laptop.

It does actually have an interesting chanel surfing alternative, where you can press the up/down keys while watching a show and scroll through the guide to see what else is on in a transparent overlay at the top of your screen. If you want to switch to that show, you press select and it changes.

Matthew