yes those Mack brewery beers are nice, had a look at the brewery when i was in Tromso. i also like the microbrewery in Trondheim - does a range of blonde beers, ambers and even stouts
my Olso colleagues have told me about a microbrewery in Oslo, near Majorstuen or Bogstadveien, which is where I often stay in a Thon hotel, must visit it next time I am in Oslo
in fact here is a pic of me at the Mack brewery - the had a beer on called "5mr Party"