I watched "Shaun of the Dead" while treading. The first 60 minutes, I walked, with a 5% grade, increasing that to 10%. That's quite a good workout!
The last 20 minutes, I used the intervals feature on my treadmill. Also a good workout, kept me at a 5% incline, and then 60 second intervals at 6MPH (making me work at a 6 MPH time). That was kind of fun (as much fun as a treadmill can be) so I might try more of the treadmill's built in programs just to mix it up.
Tomorrow is a gym day. I'm going to work on some more efficient moves at the gym.