I really get off on this too and it's surprising how hard it is to find. Not that it's not out there, but it's usually not labeled, so you just have to watch until you find it. Lots of it in TIM movies. Anyway, here's a list of hot videos I like. Hopefully other people will post more.
TIM - Manfuck Manifesto - Blake Daniels gets gangbanged
TIM - Overload - Scott Williams gets fucked by Anton Dickson
TIM - Bad Seed - Jack Hammer gets fucked by Drew Sebastian. Preston Johnson gets gangbanged.
TIM - Cum Whore - Sean Storm gets gangbanged
TIM - Man Cunt - Jorge Ballantinos gets fucked by Lito Cruz and Sam Porter
TIM - Mecos - Jackson gets fucked by Johan and Sewer Boy. Jackson is in other scenes in this video and in TIMs Mexican Cum Whores where he gets poppered up while he's fucked, but I think this scene is the best one.
TIM - Buggery - Andrew Darling and Diego Tovar. Dimitri Santiago gets fucked by Dayton O'Connor. Luke Bennet gets fucked by Lito Cruz and Jerry Stearns.
TIMFuck - Adam Russo, Hugh Peterson and Dimitri
Machofucker - Mav and the Rude Boyz
Machofucker - Tito vs Ivan
Deviant Otter - Poppers, Piss, & Perverts [condoms]
Deviant Otter - Flip Flop Fucker
Deviant Otter - Pure Filth