Dropkick Murphy's ftw and I also like a few of Hilltop Hoods songs, not normally into rap but there are always exceptions to that rule.
This is a band i've got into recently:
[youtube=425,350]E1C9N7z5sPc[/youtube]
I've also managed to get Ash into them too, definatly not a one hit wonder, check out the rest of the album