So, I had a BrewDog at a pub a few weeks ago. Punk IPA, thought it was fantastic.
Found Willow Park sells two different BrewDog four packs. One is a mixture of different IPAs made with different hops, cleverly called IPA is Dead. The other four pack is all Hardcore IPA. It was pretty hardcore at 9.2%.
Anywho, this is good stuff. Buy it if you can find it (and are willing to pay $16 for 4).