The main one that stands out to me is in Django Unchained when Schultz shot Candie. I saw that movie in theaters twice and both times there was a lot of gasps and then it burst out into applause. Also a bunch at the end especially when Django revealed he had two guns.
And another Tarantino because he's so good at this: in Inglorious Basterds that part when Brad Pitt and those guys are taking hostage by the SS and he's mocked by Hans Landa with the bag over his head and then he headbutts him. That movie was a crowdpleaser start to finish but that's one that I remember. Also the ending of course.