Very good, IMO - Schlafly’s Oatmeal Stout or Coffee Stout, out of St. Louis.
http://www.schlafly.com/beers.shtml I’ll hopefully be reacquainting myself with them next weekend. 
Seriously, THIS is a great American beer, with my endorsement.
So, how come I’ve never seen this beer in a can???
Yes… that’s a good un! Haven’t had that in ages!
Schell, Schmaltz’s Alt
Schell, Caramel Bock
Boulder Beer, Planet Porter
Pig’s Eye Pilsner (Total crap, I like it).
Dogfish Head Brewery consistently amazes me. Their specialty beers are intelligent and creative(I’m referring to the research involved in making them…not the mental capacity of the beers themselves) and their regular and seasonal brews are outstanding examples of their respective varieties. Their IPAs are the standard by which I judge all others.
www.dogfish.com
Other american breweries I love are: Rogue, Anchor, Sierra Nevada, Ommegang, Brooklyn, Boulder, North Coast, Avery, Stoudts, and Oskar Blues.
I could keep listing them…I work in a pub with 50 beers on draft and over 100 bottles 
People have mentioned Anchor Steam, but not any of the other great products of the Anchor brewery.
One of the best American things I’ve had is Liberty Ale. Also Anchor Porter.
Then there’s Anderson Valley Brewing Company.
Their Barney Flats is possibly the best thing I’ve ever had. The Boont Amber is also great. (Some of their products feature some text in “Boontling” on the labels, the language spoken only in that town. Look it up.)
Some great stuff also from the MacTarnahan’s Brewing Company such as their MacTarnahan’s and their Honey Beer.
It perhaps goes without saying that all these things must be had draught from the tap, not in bottles. Difficult but rewarding to find.
Budweiser seems to be a favorite American beer in Ireland.
Michael
NO WAY : you get that in Alabama? 
(beats IPA’s hands down IMHO) 
and ya know, all this talk about Belgian brews; If Im gonna go there, I might as well open a good Gewurtztraminer instead…
(Cali Gw’s are great, BTW!!!) 
THING IS, there’s a plethora of ‘microbreweries’ out there producing local product they know is gonna sell to their crowd. Anything along this line is way better than the heartless, mass-produced pee that passes for lager here.
Pass the port. 
yum.
It may get drank by preference in Ireland; in Arkansas, most people I know who drink Bud are drinking it because it’s cheap.
–James
I can also recommend their Deep Ender’s Dark. It’s my favorite porter, but hard to find around here.
There use to be several more breweries here locally than there is now. Back when a can was fifty cents.
On any random night they would send out what was know as the hospitality men. Some how there knew when each other were out and about. Generally there were between two or three of them that would walk into a bar and ‘‘set the house up’’ with their brand. They would walk around conversing with the patrons saying anything that would make the patron feel good. Almost like a politician. You never knew what bar they were going to next, but when they left if you left and went someplace else the odds of getting another beer increased. I don’t remember all the brands that sent these hospitality men about. But one brand did rise to the top, ‘‘free beer.’’
Same here in Chicago, but I’ve also noticed that Budweiser sponsors a lot of events like Irish festivals here in town. Its a no brainer that they’d be easily accessible at events if doing that.
Since Illinois went gone smoke free this past January I’ve been able to catch a lot of acts in bars. I’ve never had to settle for a “Bud” when ever I’ve asked what’s on tap. There’s usually several micro brewery products on tap at most bars and if I’m not enticed I can alway ask to see the establishment’s beer list for what they have in bottles.
Its been quite entertaining.
The music’s been good too.
Isnt Budweiser Czech?
Although Budweiser is a famous American brand of beer, I believe you are correct, in that somehow Budweiser could be Czech in origin.
The Czechs do make excellent beer, such as Pilzen.
Oops, I forgot that the Czechs tend to avoid vowels, so maybe the correct spelling could be Plzn.
Anyway, they do make great beer!
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I really don’t drink American beer. My favorite is Guinness, Harp, Smithwicks, New Castle, and Spatan. Is Blue Moon American? That is a pretty good beer.
Just for the fun of it, try Pilzen, a Czech beer, but cool it to about 5 degrees C, or about 42 F. That is a first class beer!
Well, even the Germans copied it, as Pilsener. Yup, it’s just that good!
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Blue Moon is not bad. Although it is brewed by the “Blue Moon Brewing” company, you are looking at an award winning premium product of the Coors company. So it is most definitely is an American beer. (A lot of people right here in Golden, Colorado don’t know this.)
I’m no expert, but in my book it’s hard to beat Fat Tire.