"Heavy Metal", but a live-action version.
"Stick It" (a female gymnastics movie needs a porn parody...and the title, c'mon)
"Cowboys and Aliens" (Cowboys and Nymphos, perhaps)
"Doctor Who" (Doctor Wooo! Can't you imagine The Doctor traveling time and space with his vibrating screwdriver, getting laid, getting others laid? Rose, Amy Pond, Martha Jones, Donna and all of those, um, companions gettin it on?)
charlie angels
wonderwomen
duke of hazards
wkrp in cincinnati
You'd be happy to know that those have all been done.
And Japlover, I seem to recall a Charles in Charge parody as well.