Yeti Imperial stout from The Great Divide brewery (a favourite of mine) is big in every way. The name is big, the bottle is big, the head is big as is the flavour and abv of 10.5% and not to mention a bitterness IBU of 75.
The aroma is a sort of boozy milk chocolate and caramel mixture.
Interesting that there is a little smoke on the palate and perhaps a little hazelnut. It's a lovely beer and so incredibly drinkable. There are more interesting beers of the style out there but not too many that make you want to keep drinking it.