Press Tour Scoop: Lauren Graham at home on 'Parenthood'

Lauren Graham is back at press tour promoting a TV series and, suddenly, all is right with my world.

Three months since replacing Maura Tierney on NBC’s Parenthood, the ex-Gilmore Girls MVP raved about her new gig this afternoon during a Q&A with the cast.

“I felt like it could be a collaborative, positive experience and it has exceeded all of my expectations,” she enthused. “It’s just the most fun day at work.”

By all accounts, the feeling is mutual. Exec producer Jason Katims said the addition of Graham lightened the tone of the show significantly. “Lauren brings so much to the role,” he said, “and one of the things she brings is this incredible humor.”

Regarding Tierney’s health, Katims said the actress — who bowed out after being diagnosed with breast cancer — is “in treatment” and “doing really well.”

Parenthood debuts March 1.