Absolutely Fabulous actress Joanna Lumley and evergreen rock hero Jon Bon Jovi join Graham Norton for this week's edition of The Graham Norton Show on BBC Two.

Nicotine fan Joanna reveals a soft spot for Paris Hilton: "She's one of those blonde mystery girls, I think she's adorable!"

And her own plans for coping when the smoking ban comes into force in England on 1 July: "I can't think what's going to happen, it's mad ... I'm inventing bike sheds to attach to buildings so it's somewhere people can go to smoke ... a sofa, a visit from Paris Hilton, it'll be such fun!"

Jon Bon Jovi talks about his forthcoming Live Earth appearances: "I was the first one to volunteer because I thought it's something I could help with. You don't have to be a rock 'n' roll star to get involved, just switch a light off!

"I think Al Gore's the smartest man I've ever met. It's a question of getting educated. Al's doing something great."

And he reveals his surprise at being unable to play Wembley last year: "The two nights at Wembley sold out last summer, they took me there, took pictures, I came back ... [but] I didn't think to go look inside, there was nothing there!"

And his upcoming appearances at the O2 arena, his first indoor UK gig for nearly 20 years: "I was supposed to have opened the new Wembley Stadium so I'll believe the O2 when I see it!" he jokes.

And there's music from Bon Jovi performing new single (You Want To) Make A Memory live in the studio.

The Graham Norton Show is a So Television production for BBC Two.

The Graham Norton Show, Thursday 14 June 2007, 10pm, BBC Two (repeated Sunday)