Well the yanks seem to have beer sorted.
You can go anywhere around here and get a Sam Adams Boston Lager. Puts any of our megaswill to absolute shame. This beer has heaps of malt flavour. Nice hoppy finish.
I can go into a supermarket like Whole Foods and have a better selection of Belgian beers than Dan Murphy's. More local APAs and IPAs than you can poke a stick at.
Now the Stone beers are just awesome. You can go wrong with any of them. I'm partial to the Ruination IPA.
http://www.stonebrew.com/beers/
And to answer the original question I think my favourite so far has been the Stone 12th Anniversary Ale. I don't see it on the page, but I'm pretty sure I had it at the Blind Tiger the other night. They call it a Black IPA, or India Black Ale.
Speaking of which, the Blind Tiger is a bit of a mecca for beer lovers. Check out the list of beers on tap:
http://blindtigeralehouse.com/page/o9a9/Draught_List.html
The lineup is constantly changing too. My liver hates this pub.
And I'm guessing brewers don't have to pay tax on how much alcohol is in the beer. An 9% Dopple Bock, or IPA or whatever usually cost the same as a 5% APA (depending on quality)... and I haven't seen any Mid Strength beers either.
Bloody Aussies need to get our act together!
Oh and I've got a spare bed for anyone who finds themself in NYC
http://gotham-imbiber.com/demystifier.pdf