From Nicole Scherzinger's green smoke bomb to Whitney Houston singing herself out of her own dress, Rory discusses X Factor's most iconic and memorable celebrity guest performances with the hosts of Right Back At Ya, David Lim and Joel Babbington. Expect Kelly Rowland's position-switching mole, Cheryl's unforgettable solo debut and Alexandra Burke's not one, but two, renditions of Bad Boys all put under the melodramatic microscope.  

WATCH THE PERFORMANCES DISCUSSED IN THIS EPISODE:

• Alexandra Burke - Bad Boys: https://www.youtube.com/watch?v=4c3uqW-OeBA
• Alexandra Burke & JLS - Bad Boys/Everybody In Love: https://www.youtube.com/watch?v=zQo79xcyD3E
• Kelly Rowland - Medley: https://www.youtube.com/watch?v=PDpmSnNLqb0
• Cheryl - Fight For This Love: https://www.youtube.com/watch?v=X0pF2MTfl9o
• Britney Spears - Womanizer:https://www.youtube.com/watch?v=f-HsM6NA4eE
• Whitney Houston - Million Dollar Bill: https://www.youtube.com/watch?v=0WSd6eRUDQ8
• Nicole Scherzinger - Poison: https://www.youtube.com/watch?v=Av_WttPAuE4

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• Presented and produced by Rory Boyle
• Theme Music by Dominic Gozo
• Artwork by Miss Gloria