I second Ardbeg Uigeadail - it's a filthy, mucky dram
You could go for a 'phroiag 18yo - amazing, but mellowed down verion so may not be as big a bang as he's after.
If you want to get him something truely different, hard to get and a little bit special you can try to search out Laphroiag Cask Strength. It's produced in very small batches and is bascially the 10yo, small batched, and at full power - 55% (ish depending on batch). It goes - distilled > cask > 10years > bottle > end
....its a little bit good
(very hard to find though)