It's Billy's Birthday Week, so let's celebrate with a Sunday Session.

We look back at Daisy and Billy's chat with tennis supercoach Darren Cahill, then Billy takes us through the top five smartest guests we've ever had on the show.

Billy had a nice birthday dinner on Tuesday night, and Topics Daisy wants to know if you share a famous name.

Hobart Hurricanes Grand Final hero Mitch Owen phones in, we get a massive Idiot File out of Billy, and he has a joke involving some bizarre sound effects.

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