Sam Adams is great!
Personally I'm a raw Jack Man but tend to take it easy as alcohol has an unfortunate effect on me after a bit
I also love Blackened Voodoo and Abita beers ( local Louisiana brews) as well as Sierra Nevada ( California ).. and actually any good hoppy beer.
My all time fave is McAusland's Oatmeal Stour (a local micro in Montreal).