In this edition of What's Shakin', Love and Girls producer Judd Apatow tells TVGuide.com about someone he met who left him starstruck: The Who guitarist Pete Townshend, a childhood hero of the comedy boss.

He tells the story of the time he went to a Who concert with Lena Dunham. Dunham started texting during the show, and Apatow got mad - The Who was playing Quadrophenia, after all.

"It was the only time we almost came to blows," Apatow jokes. "The relationship almost ended there."