If you are willing to expand your search beyond North America and have time and money there is always the Laphroaig 1977 'Vintage' (43%, OB, bottled Spring 1995). Of course this bottle will be extremely difficult to find. I suspect, however, the 1977 Ardbeg will not be found easily in Canada or the US at this point either (although surely more easily than the Laphroaig).
I have not tried either the Ardbeg or the Laphroaig in question, but from what I have read the Laphroaig 1977 ‘Vintage’ is supposed to be some dram. This is what Serge Valentin at http://www.whiskyfun.com
had to say about it on his posting of May 4, 2004:
“Its nose is very fruity at first, but heavy peat and smoke are soon to appear. Then it develops on passion fruit, and then peat and smoke again, and then fruit… That’s endless: wow! The palate is exceptional, somewhat in the 15yo’s style but simply with a little more of everything. And the balance is absolutely superb. 92 points.”
Again, I don’t want to give you the impression that there is a good chance this bottle is gathering dust at your local liquor store, but it certainly qualifies as an interesting Islay from 1977.