The three that I am talking about are, of course, Elvis, Michael... and Orson. Elvis is enjoying his usual festive attention, with an upcoming night of television shows and celebrations on January 8th of what would have been his 75th birthday. Michael Jackson's name has been prominent on TV schedules too, with retrospectives and concert re-runs. Finally, BBC 4 have been having an Orson Welles season.So what do the Kings of rock'n'roll, pop and film have in common? I will start with Welles, the portly genius whose kingly presence both fascinated and scared Hollywood. It is clear from the documentaries that his downfall was his obsession with control. Perhaps because he began his career as an actor who got into directing, his interests extended into over-seeing the whole process of film making....