Simon Cowell, Cheryl Cole, Louis Walsh, Dannii Minogue, Dermot O'Leary, Holly Willoughby, Peter Dickson, Alexandra Burke, Leona Lewis, Ant and Dec, Cat Deeley, Tess Daly, Stephen Mulhern, Amanda Holden, Piers Morgan, Jonathan Ross, Paul O'Grady, Graham Norton, Phillip Schofield....
Could probably do more with more time and memory.