Ooh Andee, I've been on 14 distillery tours, so I may be to help. I quite enjoy my wee drams. What kind of flavours do you think he'd be into, smokey (peat) honey, salt, toffee, floral, citrus, sherry? Does he like rich, heavier flavours or lighter, delicate flavours?
My own personal favourites (everyone is slightly different in what they can taste)
Note: These are all single malts (not blends like Johnny Walker, Bells, etc):
Lighter, florally, lemony notes: Glenkinchie 12 year old
Richer, smokier: Talisker 18 year old
Richer, sherry, toffee: Macallan 12 year old
Fruity, nutty, rich: Glen Grant 10 year old
Rich, smoky, but still quite light: Highland Park 12 year old
Richer, spicy, chocolatey, honey: Glenfiddich 15 year old
Good overall drinker- lighter ,delicate, but still a bit rich (toffee, honey): Glenlivet 18 year old