I got into a discussion about this last year, simply because my signature said "There's no such thing as a bad whisky"
After subsequent discussions with my learned friends from across the pond, it was amended to include the suffix ..."but indifferent may apply"
Finally, I had to admit there are certain whiskies which I would only drink for effect. Edradour 10 yo; Vintage Malts' Islay; Glen Breton 10 yo all spring to mind. I have no doubt that others will be discovered and derided but I actually found the Tomatin 12 yo tolerable as compared to the above, although I scored it in the low 80's (out of a possible 100). By way of reference Glen Breton received a 65 and Vintage Malts Islay a 05.
Muskrat Portage aka Peter