Credentials: Music tycoon turned TV entrepreneur, with a hand in the sales of over 150 million records worldwide, including more than 100 No 1 records in the UK and the US. Also involved with major TV shows on both sides of the Atlantic, including American Idol and Britains Got Talent.
X Factor track record: Been winning judge on two occasions, with Steve Brookstein in 2004 and Leona Lewis in 2006.
Cowell comments on this years auditions: There have been some outstanding auditions this year and some totally bizarre ones... A lot can change as the series goes on and acts develop differently. We have had great performances from acts in each category so its going to be a great competition and I think everyone will be surprised by some of the auditions who really stand out.
On what makes the X Factor: I think most of the time you just know - when you have a really special artist walk on stage its immediate. Im very instinctive and you can feel it, even the audience reaction, the atmosphere just changes - someone brilliant just walks on stage and you know theyve got it.
Simon says: (When asked which category hed like this year) The category thats going to win.
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Tulisa goes solo Tulisa discusses her debut solo album and rooting for Adele at the Grammy Awards as she attends a pre-Grammy party held by Belvedere vodka and RED.