(written from a Production point of view)
Carlos Milano is the actor who played a Risian waiter in the Star Trek: Enterprise first season episode "Two Days and Two Nights". As a background actor he received no credit for his performance and was identified by the name tag of his costume which was sold off on the It's A Wrap! sale and auction on eBay. 
Milano has appeared in several erotic television series and film, including The Pleasure Zone (1999), The Voyeur (2000), Kama Sutra (2000), Lady Chatterley's Stories (2001, starring Shauna O'Brien), Zorrita: Passion's Avenger (2000, also with Shauna O'Brien), Sex Files: Sex Matrix (2000), and several Emanuelle video productions (2000-2001).
In addition, he can be seen in an episode of The Bold and the Beautiful (2001), the drama Pleasures of Sin (2001), and the western Nate and the Colonel (2003, stunt coordination by Clint Lilley). He also served as producer for the latter one and received an American Indian LA Film and TV Awards Award for best feature film in 2004.