Not a big deal to turn it on or off either. There is a button on the remote to toggle it. Commercial Advance works REALLY well for almost every show and has made watching live TV intolerable anymore.

Sometimes with dark shows like enterprise or x-files it gets confused (false positives). I watch that show with it off, when a commercial comes on I click it on. The replay then automatically skips to the end of the commercials and I turn it back off.