This past weekend, bill-sharing fellows Reading and Leeds were tasked with distracting a nation still reeling from the death of its Oasis. Their secret weapons were unannounced sets by Them Crooked Vultures, the tweet-happy supergroup of Dave Grohl, John Paul Jones, and Josh Homme who introduced his band as "Michael Jackson" because he's so talented at stage patter. (Incidentally, Nirvana's ...