Have to say I've had 99% of the beers listed in this lengthy thread, from the old Red Cap to Stewart's Mountain Brew, Olympia, Stroh's, Rainier, Red Dog, Bud Dry, Hamm's, all of them are at least drinkable.
Genny 12 Horse Ale, joke was, "how do they get all 12 horses to pee in the same bottle" I actually liked that stuff.
Then you get down to less drinkable things like Golden Anniversary, Presidente, Lion's Head, some of the Mendocino offerings, etc. and they get harder to choke down.
I can recall some stuff from 35 years ago, Yuengling Beer (before the lager), Piel's Light I used to buy for 79 cents/six pack, and Schmidt's Bock Beer, Stegmaier before they cleaned up their act...some of that stuff was downright nasty.
But I'd rather drink any one of those than ever have another Coors Light.