DAmn you guys are veterans ! I've seen lots of Finnish bands most of you don't even know;
Airbourne
Amorphis
Apulanta
Asteroid
Avenged Sevenfold
Black Spider
Crashdiet
The Darkness
Ensiferum
Exodus
Graveyard
Iron Maiden
Kiuas
Korpiklaani
Nightwish
Mokoma
Mustasch
Peer Günt
Raised Fist
Reckless Love
Royal Republic
Stam1na
Suburban Tribe
Swallow the Sun
Turisas
I can tell you; There's not so much opportunities to see big American bands here in Finland...you're really lucky to see them in your hometowns =)