I know I'm showing my age here, but when Sam Adams was introduced (in the 80's I believe) it WAS microbrew... at the time there was really no such thing, certainly not that I was aware of here in Maine. I may have had my head too deep in my Budweiser can, but I don't remember hearing the term 'microbrew' till it was associated with SA. I've told my buddies before... SA opened my eyes to what a beer could be.
Now, in the advent of microbreweries and distribution agreements that get the local brews some exposure, I can definately say there are others that are better than SA, but I give props for their leadership in getting this whole thing started. When in a resturant with little local beer to offer, I certainly am willing to pay homiage to good ole SA.
As to SA's support of homebrewing, I do believe they still run their recipe contest every year.... they take recipes/samples and choose one to brew and distribute.
By the way, I agree their Oktoberfest was absolutely kick butt this year, in my opinion...