Have you tried the Santa Fe run by my good friend Henry? ( Also the proprietor of nearby Grande Grill and Dick Tracy's ) Henry has lived in the US for years and I don't know any other non-American person with as much love for stateside food than he has ( and it shows ; ). We've had long disputes about the right onions for burgers and equally important stuff when I've visited him in Helsinki.

Are you familiar with the restaurant owned by three young French gents about 30 kms west of Helsinki? I think it's called something along the lines of "The Three Musketeers". Had a dinner there last summer and it was quite nice despite of long waits between courses.

Edited: Well, actually it's called Arsene Flipo and also has a homepage: http://www.arseneflipo.fi/fr/