We weren't exactly overwhelmed by Jonathan's line up last weekend, although we'd never say no to a bit of Carol Vorderman. Anyway, we're rather excited about his sofa this weekend, seeing as he's only gone and booked Olivia Newton John. The Grease star will be popping in for a chat ahead of her UK tour, and sure won't she be joined in the green room by Keith Lemon? Who knows what will happen there... To top it all off, Nicole Scherzinger will be doing the double, sitting down for a chat and performing too. JAHMAZING.