Here is what you get when you sync up the trailer for Reservoir Dogs perfectly with clips from the original live action Teenage Mutant Ninja Turtles movie. After watching this, Leonardo as Harvey Keitel doesn't seem like a stretch.
Mashups are not easy to do. It's a painstaking process of constantly jamming square pegs into round holes. So when you come across one that is seamless, you have to admire it. This mashup, simply put, is phenomenal.