just some ideas:

self-sucking if they can do it

towel teasers - do the shower - then move em to couch or bed and tease with the towel like they would underwear - keep the body somewhat wet esp the hair

shaving - wrapped in towel and shaving the face
shaving - cock area

personally I like the muscular guys looking oiled up. Basschick mentioned that cooking spray worked better than using regular oils.

don't overlook the erotic poses ... more subtle lighting, rustic settings

reverse dressing - ie: start off naked like from a bath and then a slow dressing up scene ... like they're getting ready for a date, fixing hair, using cologne etc... end it with stuff like picking up car keys and heading out door