Finland seems to be one of the friendliest countries I've found in Scandinavia. There is, of course, the shyness that seems to haunt all of the region, but once you get over that people are very welcoming, polite, and helpful. Hold a door open for someone and they'll thank you, people working in shops and cafes talk to you. But the best thing about Finland is that no-one knows the, "I bet you a Euro I can make your breasts move without touching them" trick!