Famous faces spotted: Questlove, John Cusack, Gabriel Iglesias

SEEN ON THE SCENE: Questlove of the Roots (and Jimmy Fallon’s “Tonight Show”) was spied sipping the bubbly at RM Champagne Salon in the West Loop, while the members of Chicago’s own Wilco were seen chowing down on pizzas after finishing their six-night show series at the Riviera. … Fans of John Cusack were delighted to see the actor and Chicago native dining Monday night with a small group at Del Frisco’s steakery on Oak Street — joining many Chicagoans in bemoaning our Bears as he watched them fall to the Saints. … Lorenzo Cain, the Kansas City Royals’ outfielder who was the ALCS MVP this year, slipped into Harry Caray’s Steakhouse in Rosemont for lunch the other day. The Major League superstar also autographed a glove that is now on display at the restaurant. … Mayor Rahm Emanuel was spied dining quietly with friends at Hubbard Inn. … As the end draws near for the big David Bowie exhibit at the Museum of Contemporary Art, celebs have been streaming in to catch the show, including William H. Macy; Adrian Grenier; Earl Slick, Bowie’s lead guitarist for the “Diamond Dogs” tour and Bowie’s “Young Americans” and “Station to Station” albums, plus former Smashing Pumpkin Jimmy Chamberlin and Peter Wolf, lead guitarist for the J. Geils Band. … The Bears’ Peanut Tillman was seen lunching at Harry Caray’s 7th Inning Stretch at Water Tower Place. Tillman spent most of his time after lunch checking out the Chicago Sports Museum, playing as quarterback in the interactive Richard Dent game. The goal: To hit as many targets as you can before Dent tackles you. Good for Peanut! He set the highest score on that game since the museum opened last April. … Funnyman Gabriel Iglesias was spotted with his entourage dining at the Estrella Negra Mexican restaurant at Fullerton and Western, after his weekend shows at the Rosemont Theatre. … Bar Toma sightings lately have included “Chicago PD” star Sophia Bush and the retired NBA great and Chicago native Isiah Thomas.