Easy Rider. Debbie does Dallas, Animal Farm etc... ( lots of riding in that dude) Worlds Fastest Indian (top fillum) Terminator (it has a bike) George Formby movies ( he rides a bike all the time and plays a ukulele, while cleaning windaz) Shampoo ( a dude who's a hairdresser, and goes to his clients riding a bike and slips one in most of the time) Warren Beaty. (Not based on my career) Top Gun
Whilst it is more scooters than bikes there is Quadrophenia. Add bonus if seeing Lesley Ash (pre fish pout lips) taking it up the allley. It's actually a good film.