More:
Bryce Evans
Tucker Jennings (aka Tod of CF, Zane of Chaosmen)
Daniel Marvin (He's mostly top, but he's a sight to behold when being fucked)
Isaac Elliad aka Ethan Rezzo
Janos Volt
Rob Romoni
Josh Griffin
Colby Jansen (Mostly a top, but bottomed in a few videos)
Jeremy Walker
Mitch Branson
Mike Anders
Mike Dozer
Nicolas Begua
Rado Zuska aka Marek Tanker
Rob Steele
Slate Steel
Ted Colunga
The Rock
Trey Casteel
Tyler St James
Jim Slade was always one hell of a muscle bottom.
Good one! Love this guy.
The MH guys, do they bottom at all, or even appeared having sex on video?
Rudolf Schneider
David Kadera
Robin Sanchez
Benny G
Flex aka Joe Barkley
The Classics:
Tom Katt
Chance Caldwell (before he went to straight porn)
Actor Adrian Bouchet went by as Mark Stevens
He did a solo for MenAtPlay called DIY (Do It Yourself) where he filmed himself jerking off.
He's also done some straight porn videos, and one that's not porn but could very well be - All about Anna.
Chance Caldwell used to get fucked a lot, and rather seems to enjoy it.
Then he left gay porn and did straight porn (surprised me to learn he was a g4p), did a scene with his own son (MMF), then did some more gay porn.
Yes on the three Chrises with Dylan McDermott on the side.
More:
Beau Ryan
Duncan James
He hasn't been active in porn for most of the last decade.
You can always stalk follow him on his facebook or twitter page 
https://www.facebook.com/carlo.masi.71
https://twitter.com/CarloMasi
I think he and longtime boyfriend Adam Champ are still together. I don't know if Adam finally let Carlo top him. He always said he'd never bottom, on or off cam.
Here's a video of the two lovers doing it bareback at a hotel:
http://www.pornhub.com/view_video.php?viewkey=1007432430
Dominating a masculine muscle man, making him whimper, and seeing him surrender his manhood by getting pounded, preferably roughly.
Doubt it, considering there are not even straight porn studios. The most you can hope for are soft-porn indie flicks. Of course you can try finding underground "scandal" videos, just don't expect high-definition.
From Twitter:
"I am around and mostly in Vegas these days. "
– https://twitter.com/ZebAtlas_com November 23
I love seeing Tom Chase's face when he is getting fucked by Brad Patton in Couples III, as well as his scene with Tim Kelly in the The Big One.
Another one is Benny G being barebacked in When Muscle Bears attack.
See Erik Rhodes bottom for a twink in Velvet Mafia. https://www.gaytorrent.ru/details.php?id=700cfb47d1556ae463fb5710177d942429f8daf59d05e273&hit=1
Christian Powers is a towering who got fucked a few times on Men of Montreal.
Leo Giamani has a nice huge dick. And lest I forget, check out Ted Colunga/Fred Fele's videos.
Robert van Damme
Billy Herrington
spencer Reed
I wish Zeb Atlas would surprise everyone and get his ass fucked already
Adam Champ
I remember him explicitly saying he'll never bottom because he sees it as giving the top control or something.
I always felt Tom Cruise would be a bottom.
Michael Fassbender I think would have it both ways, or at least that's how I fantasize him :crazy2:
I got this bootleg years ago, the title was "Aroused: the hard cut" from a studio named Zipper Video. I liked that it featured a lot of foreplay and the actors seemed to be really into it.
Sadly my hard drive died and now it's lost forever. I've been searching online, but even google fails me. :blownose:
Extremely rough! With ultra hung tups and slutty power bottoms… hairy and sweaty men are a plus, but I also like twinkish bottoms.
I like it nasty, intense and bareback when it comes to porn.I agree here, minus the twinkish bottom thing. I also like really romantic, sensual stuff. However, not many porn actors generate enough chemistry/heat to pull romantic off for me.
Rough = Wurstfilm "Perverts" series or most TIM Liam Cole directed videos.
Sensual = Titan's "River Patrol" The scene with York Powers and Cliff Parker is mega hot, and slightly aggressive. Johnny Dawes and Michael Christopher in the vintage film "Pleasure Beach" is just excellent chemistry with a good story to boot!
This. Twinks kill the mood for me.
Plus points if the bottom is someone you wouldn't typically think of bottoming.
On the straight side:
9 songs (2004)
Diet of sex (2014)
Now and later (2009)
Muscle guys like receiving attention. Some more than others, but attention is generally well received by them muscle guys.
If there is a chance to get some action with one, sometimes a little indifference might trigger in him that he craves your attention. If indifference is starting to work, then you camn slowly escalate until you get him to receive your attention privately. Now use kind indifference.
Good advice, don't to look desperate for muscle.  It will make you look more interesting to the guy you aim to get for you. ;D
sound advice