It's probably not what you're thinking. They're a band I've been listening to a lot recently, and I thought I should share my enjoyment with the world. They also contributed the majority of the soundtrack of Friday Night Lights. They're also from Texas.
Wikipedia describes Explosions as 'post-rock'. I'm entirely sure what that means, but I'm going to go ahead and call them an instrumental band that immediately evokes an emotional response. You will know instantly if you love or hate them, and, quite frankly, I love them.
Their songs, especially the ones found on Friday Night Lights Soundtrack are so damn uplifting it hurts. I also have to strongly recommend their album, "The Earth Is Not A Cold Dead Place". It just makes me feel so empowered. Like I can go out and succeed at whatever I should so desire. Strong instrumentals, especially the base guitar and drums (note: this might be the entire band, though there are definitely symbols) really just make the album come alive.
So go out, listen to some of their songs. I don't think you will be dissappointed.