Muse

Muse is probably my favorite band. I almost have their entire discography and there isn't one song by them I don't like and that's over 100 songs. As I said, all their songs are amazing, but none of them really sound the same, but they still feel right with the band. Some song are R&B influenced but they use really distorted guitar and give it their own edge. Muse is truly one of the best bands, and unlike most bands now a days, they are great live. I suggest, if you haven't heard them, go download or buy Black Holes and Revelations, Absolution, and Showbiz, plus they have tons of EP's and a couple live albums.
Now let's get to the heart of what Muse is. Muse is a British rock band formed by Matthew Bellamy (vocals,guitar, piano, keyboards, synth, and programming), Christopher Wolstenholme (bass, back-up vocals, synth, and double bass), and Dominic Howard (percussion, synth, and programming.) Matt uses an armada of pedals to get many, many, many sounds out of his guitar. His guitar also has an effect pad on it (for more information on his guitars check them out, they're really cool, http://www.mansonguitars.co.uk/Muse%20gallery/index.htm). Matt's voice is a combination of falsetto's and a pretty much constant vibrato. I've also been told "his voice makes me want to jizz in my pants", if you listen to them you'll understand. Chris is mostly the bass player, but he's not and average bass player. They use effects on it. Mostly distortion but sometimes they use other stuff, but it sounds reeeeally cool, listen to Hysteria and Time is Running Out if you would like to hear it. Dominic's a good, solid drummer, they do have some difficult drum parts though, like in Assassin (particularly the intro), which is a great kind of hardcore influenced song. They have a few of those Drop-D gems (Assassin, Dead Star, Stockholme Syndrome are some great examples).
They recently came out with a new album, The Resistance, I haven't yet had a chance to listen to it though so if you have, let me know about it. They have an almost countless number of albums and EPs. From first to most recent: Muse EP, Muscle Museum, UNO, Cave, Sunburn, Unintended, Plug In Baby, New Born, Origin of Symmetry, Bliss, Feeling Good/ Hyper Music, Dead Star/ In Your World, Hullabaloo, Stockholme Syndrome, Time Is Running Out, Absolution, Hysteria, Sing for Absolution, Butterflies and Hurricanes, Supermassive Blackhole, Blackholes and Revelations, Starlight, Knights of Cydonia, Invincible, Map of the Problematique, HAARP (Live from Wembley Stadium), The Uprising, The Resistance, and Undisclosed Desires. Most of those are singles but still, that's a very large armada of music and not one bad song, in my opinion.