It's funny how the paparazzi put their own fucked up slant on to things. In the second video, the comment reads:
The eccentric director hijacked a tourist couple's sidewalk photo shoot outside Winston's, jumping into their shots and making absurd faces and Vogue-like poses. The couple didn't seem to mind though -- they'll go back to Ohio with photos of Tarantino!
Well I don't know if the guy and the girl he's posing with are a couple, but that guy is actually Edgar Wright! He was probably on a night out with them, saw some photographers so decided to pose for a laugh.