I've had a treadmill at home for about 10 years now and use it religiously - I LOVE it, best money I ever spent for my health/well-being. I cannot stand the elliptical - I've tried it at the club and I just get so bored for some reason, time just crawls for me, it drives me crazy. So I guess everyone is different.
I just slap in a movie or something I've taped, put on my headphones, and start runnin'. Love it.
