Joan Collins & Larry Hagman in Up In the Cellar (1970)
70's era sexual politics and student unrest are the subjects of this trivial farce. Colin Slade loses his scholarship due to a computer error. When the powers that be, namely the University president Maurice Camber (Hagman) refuse to address the matter, Slade decides to sleep with his wife, daughter and mistress. This complicates Camber's run for the senate and hilarity ensues.
Though very much of its time, this film has some charming elements to it. Joan Collins has fun with her American accent, Larry Hagman seems to relish playing the villain long before his successful run on Dallas (1978) and though marginally successful, the film led to an appearance for Wes Stern on The Mary Tyler Moor Show, playing a similarly lecherous character in an episode titled "He's All Yours" the same year.
The film is difficult to find. it's not on DVD, but can be found on Modcinema.com. They uploaded the clip above to YouTube.
Obscurity factor: 10 (hard to find, not on DVD, almost completely forgotten)