We've basically known this was coming for some time, but it became officially official a little under a week ago when the first trailer aired and we got a premiere date.
SCIENCE, BITCH! Of course, we're talking about the Mythbusters episode featuring Breaking Bad creator Vince Gilligan, Aaron Paul (Jesse Pinkman) and a bunch of show-related myth testing. It's already aired in Australia, but viewers in the U.S. were supposed to have to wait until August 12th (one day after the Breaking Bad season premiere) to see it.
Key word being "supposed." It's up on YouTube right now - yes, the full episode. You better watch it quick, however. Who knows how long this one is going to stay up.
UPDATE: I told you to watch it fast - the video has been removed. Please, enjoy the trailer as a consolation:[via reddit]