Takes One To Know One!  Elton John has battled his own demons with alcohol and drugs in the past.  In the last issue of Rolling Stone, Elton spoke frankly about his close friend and tourmate Billy  Joel's struggles with addiction.  He criticized him for not taking rehab more seriously.  Elton John recently appeared on The Today Show, and he said about Billy, "He hates me at the moment.  He sent me a message and he's not happy about it."  Billy Joel recently issued a statement saying "I don't HATE Elton John."