Flippo pointed me to an interesting Vista-only solution, Lifextender, to remove commercials from your TV recordings. We've been spoiled for a while by ReplayTV which automatically skips commercials for you. Occasionally, it does skip the actual programming so it's probably better in my opinion to not remove the commercials, but skip over them.
Even though Lifextender is Vista only, there are XP solutions as well. DVRMSToolbox, and a setup guide... DVRMSToolbox has a lot more capabilities and isn't as easy to use as Lifextender, but it does allow you to skip your commercials.
Pretty sweet, thanks Darin!
