Sex tapes. They're like porn films, except dimly lit with less appealing actors. Oh, and the sound is bad. Also, sometimes the bodies are green on account of the infrared, a necessity due to the previously mentioned dim lighting. So unless you have a Kermit fetish or enjoy watching very unattractive people with inept camera sense engage in poorly directed intercourse, the average amateur sex tape probably doesn't do it for you. That being said, celebrity sex tapes are an entirely different beast with two (or more) backs.

('’) That's mostly because half of the celebrities involved have had porn star-worthy plastic surgery. Or, they are actually having sex with porn stars. From Tonya Harding to Kim Kardashian, sex tapes featuring famous folk have become a mini-industry, sometimes pulling in millions of dollars for both celebrities and their respective video distribution company. In honor of the happy and sometimes promiscuous holiday season, the graphic below spotlights some of the most memorable celebrity sex tapes of the past two decades.

CLICK TO ENLARGE.