16. National Lampoon's Animal House
http://www.youtube.com/watch?v=YSRUNhsTbVw In the 1978 film National Lampoon's Animal House, a misfit group of fraternity members challenge the dean of Faber College, and get up to all kinds of mischief along the way. Particularly John "Bluto" Blutarsky, who uses a ladder
to spy on a sorority girl undressing. The equally-as-pervy Herbert uses a same technique to oggle a topless Chris, and even uses that famous "hopping ladder" technique, before "swooning" as the ladder falls backwards, sending him crashing to the floor.