Trondheim has not only got great pieces by Pøbel and Dolk at the train station. You can also get nice surprises around in town, according to the Norwegian Stencils blog:
http://norwegianstreetart.wordpress.com/2010/05/01/p%C3%B8bel-hits-the-streets-of-trondheim/
The blog also got great pictures from the station in Trondheim:
http://norwegianstreetart.wordpress.com/2010/04/30/dolk-and-p%C3%B8bel-in-trondheim-exibition-at-trondheim-central-station/