India, Oct. 7 -- Bollywood actor Madhuri Dixit is all set to grace Kaun Banega Crorepati 18 and join Big B's birthday week celebration. A new promo from the upcoming episode shows Amitabh Bachchan getting embarrassed as Madhuri showed a video of the superstar dancing to Ek Do Teen in one of his films.

The promo showed Amitabh Bachchan apologising to Madhuri for grooving to her song Ek Do Teen in one of his movies. He said, "Ek baar humse badi gustaakhi ho gayi thi. Ek film thi, usme humne aise ek do teen kiya tha (I once made a big mistake of trying to dance to your song Ek Do Teen),"

Madhuri then teased him to show the clip of him dancing to the song. A clip was then played on screen showing Amitabh dancing to the famous track in a sce...