I could name a couple. But the first name that pops in my head is Paul Johnson!!
I simply adore him as a gay porn star. He has an Average Joe look that is highly and extremely sexy. And that he's unattractive...the man is seriously gorgeous. But he possess that type of handsomeness that is very approachable. He's not overly muscular but you can tell he takes great pride at keeping his highly athletic physique in marvelous shape. His skills as a performer is incredible. He's versatile but he works best as a greedy, loud bottom and it's completely understandable. He got one of the best sculpted asses I've ever seen on screen. I mean that shit was simply desired to be fucked and fucked hard and often. And boy does he know how to deep-throat big dicks!
One of my all-time favorite porn scenes was with him and Jon Ashe (another hugely unrated star with his well-tone lean muscles, the board back which is covered entirely with one large tattoo and he has one of the chunkiest, thickiest, veiny cut cocks I've ever seen) in the video Sex Psycho. They're at a waiting area on the first floor of an office building and in front of a huge bay window in where pedestrians could easily see them, in fact a guy did stopped and looked, Ashe fucked the holy shit out of Johnson. It was sooooo unbelievably hot and what's even better it's a long, long scene!!
http://www.alsgaypornstars.com/images/pauljohnson2.jpg