My favorite anti-Alekhine variation:
The Emory Tate Variation! (Alekhine Defense)
A friend of mine who is a NM played Emory Tate in a tournament. Emory was drunk and got disqualified for taking a phone call or something like that.
Even his son wouldn't do that Jesus christ...

I have been playing Alekhines defence for 5 years now, and its the most reliable and well scoring defence I have tried.
One of my first teachers in the Alekhine taught me a principle which I still try to follow. The principle goes like this: "If white ever plays a4 and it does not look horrible or punishable, play a5". Although I have given my opening advantage as black away many times by following this principle, the principle has always given me the option of a safe passage to the middlegame if I wish to follow it.
Emory Tate got a heart attack like a year ago