I recommend listening to more of them, if you love rock, punk, emo or screamo. I have a good veriety and even if you don't like any of the ones listen earlier, you still might like it. They have great songs. I suggest rum is for drinking, not for burning. It isn't my favorite, but I think it will be a good starter's song.
People only know them because of GH? I was fan of them before I found out it was on GH 3 (I had GH 3 much earlier though, but never really paid any attention to it xD)