1 "Schlitz -- the beer that made Milwaukee famous." And back then it wasn't bad, compared with the run-of-the-mill American piss-water beers. I preferred Blatz myself. Egad, I'm starting to think of all the brands that were around then: Carling's Black Label, Genessee, Pabst Blue Ribbon, and whatnot. 

And now that we have a million really good craft brews, I can't imagine going back to any of those old terrible old standard brands that I used to torture my liver with.

2 Yep; the old days there were lots of beers. St. Louis had like eighty breweries before Prohibition of varying quality. Samuel Adams was the Koch Brewing Company of St. Louis before closing and then reopening under the Sam Adams name in Boston. Some of the local brewpubs make some of these old beers from the formulas that survived and they are good or not so good. But it's fun to drink 'em regardless. I often though it would be fun to open an heirloom brewing company that did nothing but make the old beers from around here. 
I remember Blatz but never tasted it. I remember all the others you mentioned too and had some of them and some not. There used to be so many; Griesedick, Stag, Lemp, Olympia, Old Milwaukee, Old Style, Hamms, Lone Star, etc. etc. 
Yes, with the rise of craft beers the beer is much better. On the other hand all they seem to want to sell these days are IPA's, and over-hopped IPA's at that. The old style of IPA is largely gone for the super large comic book version. A lot of times I just want a simpler beer. 

3 In Dunkirk, NY, right next to my home town, there was the Fred Koch Brewery that produced pretty awful stuff: regular Koch and Koch's Golden Anniversary. The Finger Lakes area of New York produced Genessee beer, Genessee 12-Horse Ale and Genessee Cream Ale. 

I ran afoul of Old Milwaukee once only, luckily. And I believe Lone Star is a Texas beer, one that you either love or hate. And let's not forget Pabst Blue Ribbon, which I believe is still available and which has a definite country music connotation. 

If you happen to be in Minnesota, you'll find offerings from Schell's, the second-oldest continuously family owned and operated brewery in the country, producing a number of varieties under the Schell name such as Firebrick and Schmaltz's Alt (my favorite); unfortunately, to keep the place running they've had to also brew Grain Belt, a standard, uninteresting beer under license.