What's Your Number? (2011)

What's Your Number? is a 2011 romantic comedy about a woman tracking down her past boyfriends to find out if she already dated the one and let him go. Chris Evans plays the neighbor across the hall, shirtless for a good portion of his screen time. The 4 scenes collected here catch him dropping a towel and stripping down in full, with more than one angle on his bare backside. It's footage from before Captain America, when Evans was still playing loose and cocky and willing to get naked on camera.