To all those who claim Guiness as their favorite, have you tried Murphy's?
My favorites probably have changed over the years and will probably continue to.
I loved Henry Weinhard's Ice Ale, but apparently they either don't make it anymore or don't distribute it in California, I don't know which since they don't have an official website.
Bar none I have to say that beer out of the tap is better than can or bottle and I rarely drink any beer out of a can anymore. Samuel Adams out of the tap is so much better than the bottle it pretty much spoiled my enjoyment of their stuff.
Which brings me to Pyramid Brewery. I love their stuff, but again going to the bar and ordering a growler is so much better. Of course, it wasn't my growler so that hasn't happened in several months.
But anyway, I like their Apricot Ale, Curve Ball and Coastline particularly well. I can't remember if it was the Curve Ball or Coastline, but one of those really rocked.
I also like Redhook ESB, Anchor Steam, Modelo dark and light, Bass and other stuff I can't remember or didn't see listed by others in this thread.