Muse (duh!), but I also like a vat array of other bands
Muse Releases Owned
Showbiz, Origin of Symmetry, Hullabaloo Soundtrack, Absolution, Blackholes and Revelations, Hullabaloo DVD ...
I don't buy singles, but regret this because they often have really good B-sides (in fact, I wish Muse would do another Hullabaloo and put all the newer B-sides on an album)