we went to stay in a hotel in scotland that was popular with honeymooners, and the landlady told us she had recently had a newly married couple who asked her if she'd film them having sex. she said it wasn't the first request like that so she'd got hold of a tripod, which she lent them.
its great fun, try to put the camera tripod on a dressing table so it's looking down on you and it will look a lot sexier, you'll see more of the actual penetration. better still, have a foursome and take turns to film the other three, but make sure both couples get a copy.
a swingers club we visit, la chambre, often has commercial film sessions for ordinary members and has released 4 or 5 DVDs so far. we're tempted but don't really want to be seen by thousands of others!