Who? Ghanaian rapper and model, both reality TV contestants.
Real? Yes.
Rapper Eazzy (real name Mildred Ashong) and model Keitta Osei, both from Ghana, were contestants on Big Brother Africa Stargame in spring 2012.

Around June 1, 2012, night-vision cameras in the Big Brother house caught Eazzy and Keitta in bed together. One tabloid article reported:
The photos and video of the sex available to us showed the two in the missionary position as they kissed passionately, touched thoroughly with a blanket covered their lover parts.
As Mildred try to use her hands to romance the love of her life, she turned to reveal some part of her body. Still in the missionary position and as they kissed like their life depended on it, she simultaneously pulled Keitta’s blanket away and replace it with hers.
Were they having sex or just enjoying a heavy makeout session? The blanket covered them from the waist down, so it’s hard to tell. Video of the Eazzy + Keitta hookup may be found on various tube sites.

Eazzy later told an interviewer:
Me and my partner made a pledge not to have sex in the house and we kept that promise till date. We didn’t have sex in the house but we did have a lot of romantic times I must say. There were times we made out under sheets like crazy making out. You know the kind of making out where you have you man on you and he is moving so you feel him.
Eazzy was kicked out of the house a few days later, while Keitta survived into August. They resumed their relationship on the outside.
Who? Murderer and murder victim.
Real? Yes, audiotape of phone sex was played at Arias’s murder trial.
Jodi Arias killed ex-boyfriend Travis Alexander in June 2008. At her murder trial in January-February 2013, Arias took the witness stand and spent several days describing her sex life with Alexander. Her defense basically involved smearing Alexander as a pervert, pedophile and woman-beater.
On Tuesday, February 12, 2013, the Arias defense played an hour-long tape-recording of a phone conversation between Arias and Alexander, which included a few minutes of phone sex. She recorded the tape a month before the killing.
This YouTube link should be cued up near the beginning of the phone sex portion:
http://youtu.be/ANNFSY5x-3w?t=29m30s
Jodi Arias’s phone orgasm begins around the 31:15 mark.
Headline News covered the Jodi Arias trial every night for several weeks. Their crime-oriented shows played excerpts from the Jodi Arias + Travis Alexander sex tape. Several media outlets streamed the trial live, so the full hour-long recording circulates widely.
Earlier in the trial, the prosecution showed several nude photographs which Arias and Alexander took of each other just hours before the murder. See: Jodi Arias trial nude photos uncensored.
Who? Movie star.
Real? No.
In December 2012, the National Enquirer reported (or “reported”) that there might be old naked photos of Angelina Jolie “floating around — including some involving self-mutilation — as well as a possible sex tape”. The article also stated that husband “Brad Pitt is ready to shell out a staggering $10 million to make sure raunchy photos and a rumored sex tape she made never see the light of day”.
The tabloid’s source was an anonymous “insider”.
According to the source, a team of investigators Brad hired to find incriminating evidence of Angelina’s past has told him that the 37-year-old actress may have made a sex tape during a “drug-fueled session” in 1999.
“The alleged tape was made around the same time that a friend snapped kinky photos of a strung-out looking Angelina,” the source continued. [...]
In the fall of 1999, Angelina was photographed during what’s been described as a 14-hour heroin-smoking bender while holed up in Beverly Hills’ L’Ermitage hotel.
“Angie was so whacked out on dope that she doesn’t recall exactly what she did,” divulged an insider. “But she believes that it may have involved ‘cutting,’ as well as racy sex.”
Another quote from the same anonymous source, “Brad’s out to protect the new image that Angelina has tried hard to build — A-list actress, doting mother of six and UN human-rights crusader. He’ll do whatever it takes to buy these photos and track down the alleged sex tape.”
The photos in question, showing Jolie topless with black tape over her nipples and a dog leash around her neck, ran in The Star tabloid in 2010.
However, no other news outlets have mentioned this alleged rumored Angelina Jolie sex tape. It’s hard to even call that a “rumor”. As much as we’d like to watch young Angelina’s drug-fueled kinky sex bender video, ICSTDB calls fake.
Read the National Enquirer story here (though the Enquirer often removes or moves old stories).
More Angelina Jolie sex tape debunking at the excellent Gossip Cop.
Who? Vietnamese-African-American rapper.
Real? He co-directed a porn flick; not exactly a sex tape, but it’s real.

Rack City XXX – Tyga
Rapper Tyga (acronym for Thank You God Always) released several singles in 2011, including “Rack City” in December. The track later appeared on his 2012 album
Careless World: Rise of the Last King.
Also in 2012, Tyga made a porn flick called Rack City XXX. Tyga is credited as co-director along with longtime pornographer Justice Young. The soundtrack includes Tyga singles “Rack City” and “Faded” plus several original songs.
An impressive stable of mainstream pornstars appear in the film: Jada Fire, Eva Angelina, Ice LaFox, Daisy Marie, Havana Ginger, Austin Taylor, Kristina Rose, Stacie Lane, London Keyes and Skin Diamond.
Tyga himself appears in the film, but in a fully-clothed non-sex role.
Rack City XXX uses a dream plot which involves Tyga wandering through his mansion watching a series of freaky sex scenes. “Tyga’s gold box has been stolen, as he tries to track it down in his hollywood mansion he slowly realizes that he is actually living his dream. Every room he enters and everywhere he turns he finds his crew smashing his maids, his groupies, his car wash girls, and his personal bartenders. Shit just got crazy!”
There used to be a safe-for-work trailer up on YouTube, but apparently it was not safe enough — YouTube removed it for violating the site’s nudity and sexual content policies.