I have to admit, this is that song from the Internet Explorer 9 commercial. While IE sucks, that doesn't change the fact that it's a damn good song. Plus, I'd never heard of this guy before that commercial, so the commercial wasn't all bad. Good for him for getting some exposure on Microsoft's dime.
Light This City. I've posted some of their music in this forum before. Great band. Too bad they broke up and the lead singer and one of the guitarists formed some punk band, forgot what it's called.
Kalmah. One of the finest examples of Scandinavian Melodic Death Metal. Great stuff.
Amon Amarth. Viking Metal, I guess? I dunno what it's called, but it's awesome.
All that Remains. Great band, one of my favorite songs by them. There's a funny "misheard lyrics" video on youtube too, making fun of this song. LAWNCHAIR!
Parkway Drive. A great Australian metal band. I've only heard one of their albums, but pretty much every song I've heard from that album is kick ass.
In Flames. I think most people that like metal have heard of these guys. One of the bands that started the Melodic Death Metal genre, along with At the Gates and Dark Tranquillity, all hailing form Goethenberg, Sweden. One of my favorite songs by them.
Dark Tranquillity. See above.
Across the Sun. A relatively unknown band. They've now released an actual album. It's not quite the same as this, but still metal. This song is from one of their LP's.
Arch Enemy. Another awesome band with a female singer/screamer. (Light This City is the other one that I posted.) Yeah, that's a woman doing that...