My cycling coach mixes up the motivation quite a bit. Some days we have scenic cycling videos (where it's shot from the rider's perspective, so you rarely/never see a bike, just the road and scenery ahead) which he sets to music at whatever cadences we are working at for the day. Other times we use Robbie Ventura videos to simulate races, sprints, pacelining, etc. On time trial days, we usually get treated to footage of Lance, or even better, Fabian Cancellara, again set to music by the coach to keep us pedaling at certain cadences. There are days with no video at all, where it's just music and drills, but that's OK too. All in all, a great combination. Definitely never boring!

I've tried to sit on the trainer in my garage and I simply can not motivate myself to do it for long. Boooooring, and more importantly, I just don't push myself the same way I do in class.