It's the casting coup of the year. Amitabh Bachchan and Shah Rukh Khan are being brought together by Karan Johar - not in a film but on a TV chat show.

In what promises to be the grandest grand-finale ever seen on television, Bachchan and Shah Rukh will be the guests on the show "Koffee With Karan".

For the final episode, Karan had planned something "incredibly spectacular". And what more than the two biggest superstars of our times?

This mega event, to be telecast at the end of May, was quietly recorded on the night of April 4.

That's not all. The enterprising host gets three major directors - Sanjay Leela Bhansali, Farah Khan and Farhan Akhtar - to come on the show to talk about the two stars. What's more, Karan also invites Shah Rukh and Bachchan's favourite co-stars Kajol and Jaya Bachchan respectively on the sets to talk with the two megastars.

Quite a "Kabhi Khushi Kabhie Gham" on television, huh? "That, you'll just have to wait and see. Right now I'm not saying anything about the grand finale," chuckles Johar.

"All I can say at the moment is, I've had a ball doing the show. 'Koffee With Karan' has opened a new door and it has made my audience look at me as a different entity. I'm no longer asked what film I'm making. I'm asked who am I recording my next 'Koffee...' segment with.

"Whenever I'm seen having coffee at a restaurant I'm thrown a 'Koffee...' joke. Everyone thinks he got there first. Little do they know that I've been besieged with such jokes ever since I began the show.

"Now I've had enough. I need to get back to making a film. But I'll be back with 'Koffee...' next year."

Before the season ends, Johar hopes to record episodes with Shahid Kapur and Esha Deol, Rishi Kapoor and Neetu Singh, and Hema Malini and Zeenat Aman.