It's not a bust as such, but I'd recommend that people shoot themselves instead of getting Chris Dunworth's video on the Alekhine. He gives a few of the sharpest lines in the alekhine (which, moreover, are pretty good for white), with very little explanation. Moreover, a few of the resulting positions are pretty hideous for black. 

Okay, these days the alekhine is considered a little suspect anyway. But Dunworth has done little to give me more confidence in risking the opening, and I shall promptly be selling my copy.