Spinning

So I signed up to try out spinning classes at a yuppie Minneapolis gym. By far my biggest problem in racing and training is motivating myself at the pain threshold. Spinning classes are supposed to be very motivating, with upbeat music and sadistic instructors pushing you into the red. There's no way I'd be able to get in a good workout on an indoor trainer watching some video. Unfortunately paying cash money to have someone yell at me would work better. Hmmm, sounds like S&M doesn't it?