I found a few over the last few weeks, some of them Irish music but they are rather good
Come out ye Black and tans by the Irish Descendants
http://www.youtube.com/watch?v=FCnGD6xv5ik
The Seven deadly sins by Flogging Molly
http://www.youtube.com/watch?v=zmAqwsla47E
What's left of the flag by Flogging Molly
http://www.youtube.com/watch?v=ojKoTjsSks8
On top of those I've also discovered the new Linkin Park
Waiting for the End - Linkin Park
http://www.youtube.com/watch?v=5qF_qbaWt3Q
When they come for me - Linkin Park
http://www.youtube.com/watch?v=WNKv_nrTIeI
And just a bunch of other random songs and bands
Welcome to the family - Avenged Sevenfold
http://www.youtube.com/watch?v=6-iOKHjy3sQ
Stupify - Disturbed
http://www.youtube.com/watch?v=yy6ZHsM0U5Q
And of course Rise Against, probably my favorite band
Chamber the cartridge - Rise Against
http://www.youtube.com/watch?v=_HZ6aNPjNVk&feature=fvst
Torches - Rise Against
http://www.youtube.com/watch?v=tvzFzEIwoF4
Voices off Camera - Rise Against
http://www.youtube.com/watch?v=rJhyjKThpHc&feature=related
Elective Amnesia - Rise Against
http://www.youtube.com/watch?v=V61Rggeb0LU&feature=related
Generation Kill - Rise Against
http://www.youtube.com/watch?v=xd5x-tKOr6U&feature=related