Rob Lowe in L.A. this month. (Dan Steinberg/AP)

Joe Biden treating a couple of his granddaughters at Pete’s Apizza in Columbia Heights Friday night. Jacket, no tie. Crowds hovered outside the window to take pics.

• Edward Gero taking in the Rothko room at the Phillips Collection Friday morning. Hardly a first for the actor, who spent hours there in preparation for his role as Mark Rothko in Arena Stage’s “Red” — but this time he brought along Patrick Andrews, who plays the artist’s assistant.