5. Michael Jackson
Quite frankly his memory has been tarnished enough, so a holographic tour starring the King of Pop is not only the icing on the cake but surely inevitable. People would attend in droves; his estate would rake in the mountains of moolah and wed get a never-ending deluge of Daily Mail tittle-tattle on the bizarro rehearsal sessions that will inexplicably involve Bubbles the holographic monkey making diva demands whilst practising his pre-show warm-up. Will.i.am will show up for some reason and Michaels avatar will duet with Janet and the rest of the Jackson brothers (though some wont show up because of internal familial strife). Michaels dad and his weird eyebrows will also watch menacingly from afar. The world will rejoice and recoil in equal amounts.
6. Cliff Richard
Hes still alive, you say? We can still place all of his fans in a stadium: Ill lock the doors, you can swallow the key. Remember to put Holo-Cliff on loop, and real Cliff on decks. Say goodbye to your grandma. Mistletoe, wine and so on.