I just had Rueuze by the Bruery, very nice beer. Are there any other domestic attempts at Gueuze that are worth seeking out?
Allagash Coolship Resurgam.. http://beeradvocate.com/beer/profile/4/58840/ Good luck finding it, though.
While they only bust 'em out for festivals and events, the AC Golden Colorambic variants are amazing.
Being from Massachussetts, he's probably close enough to Maine that he could probably get some the next time it's released at the brewery.