Of the grain whiskies, Grouse is the one I like the best - it's nearest in flavour to a malt, and lacks the harshness of Teacher's, which is vile rubbish.
Of the malts...
Glenmorangie is one of the least challenging - it's what I cut my malt whisky drinking teeth on, after being somewhat put off by Glenfiddich.
Laphroaig is a peaty malt - slight phenol (TCP) tones, which is nicer than it sounds, and very smoky.
The Speyside whiskies tend to have sweeter notes.
If it's a VERY special gift, look for some of the Glenmorangies that have been matured in different woods - the port wood is particularly nice, though the Madeira one is lovely, too.
And, as others have said, the older the better, as a rule.