Here's what's happening today in pop culture:
• Lance Armstrong has turned down a spot on "Dancing With the Stars," while he also faces a lawsuit from buyers of his books who complain that they should have been labeled "fiction." [Entertainment Weekly, Los Angeles Times]
• Yes, Beyonce lip-synched the National Anthem at President Obama's inaugural. Can we all move on with our lives now? [The Huffington Post]
• Hardcore/prog-rock group The Mars Volta is breaking up. And, of course, lead vocalist Cedric Bixler-Zavala announced this on Twitter. [Vulture]