"Trading Spaces" is back, and we've got original cast members Ty Pennington, Genevieve Gorder, Paige Davis and Doug Wilson here in the studio — with their newest member, our friend John Gidding. The home decorating gurus are solving design dilemmas all hour long and catching up with a woman whose room was re-done on the original series to see what changes she's made. Plus, Rachael's making a spring mac and cheese: Mac & Cheese with Peas & Asparagus!