Speight's Old Dark, a South Island NZ beer, is the best canned brew to ever moisten my eager lips. Never seen it this side.
Fat Tire's a beaut. Oskar Blues Scottish Ale and (with an ice chest) Mama's Lil' Yella Pills (Pilsner). Modelo Especial's good for rowing against the wind. For drag-bags in midsummer water and lightweight no-cooler trips, I like Foster's, which tastes good when fairly warm.
PBR was a former favourite. I think.