I bought some Flying Dog Numero Uno recently...and it was pretty good!
I don't drink beer often, but wanted one last night. I had some Bud Light in the the spare fridge that came from my dad's house when I closed it up, it has to be over 2 years old. I figgered it would be flat, probably skunky, but I tried it anyway. I was surprised. It wasn't flat or skunky. It was...... nothing. I've had sparkling water with more body and flavor.
I was "lucky" enough to be stuck working in Belgium in a city a couple years ago where certain connections could get you the Belgian monk's beer. Damn..that stuff was good.