Learning Finnish with Nightwish fans

I know that many foreigners start to learn Finnish because of the Finnish metal bands.  Nightwish is definitely the most famous one of them, and Yle just released a documentary made by Nightwish fans. If you haven't seen it yet, now is a good time, and you can also learn Finnish by reading the subtitles. (My favourite character is the man showing the pictures from his trip to Kitee.)