Two films that I return to over and over:
On The Schoolbus-- I just love the whole story behind this one, and the blonde girl is simply gorgeous (shame about the tattoo though)
and this vintage one:
Girl Scouts-- again, I like the storyline, and the plumpish blonde girl is lovely; I love her "hey look at me, I'm grown up enough to look at porn, and adult enough to ask him to get his cock out" attitude.