If he likes Whiskey, perhaps you could educate him into drinking something better, like Whisky?
Maybe a 'sampler' set, possibly home-made, of several miniatures of some scottish whiskies, around the darker / peaty single malts. (Macallan 10 year old sherry is excellent)
Not actually being serious with the whisky snobbery, I just find a lot of people who drink JD drink it because its their first intro to some whiskey/whisky, and haven't really explored the different types and flavours available much.