Celebs around town: Dee Snider, LaRoyce Hawkins, Lee Pace

SEEN ON THE SCENE: “The Hobbit: The Battle of the Five Armies” star Lee Pace — who also starred in the blockbuster “Guardians of the Galaxy” this year — was spied sipping cocktails in the popular Library Bar at the Public Hotel the other night. … Fans of Dee Snider will want to know the rocker will be performing a mash-up medley from his show “Dee Snider’s Rock & Roll Christmas Tale” at noon Friday in the Atrium at the Thompson Center atrium, 100 W. Randolph. The Twisted Sister mainstay’s show at the Broadway Playhouse at Water Tower Place runs through Jan. 4. … First it was “Chicago Fire” star Christian “Mouch” Stolte who performed as the guest monologist at “The Armando Diaz Experience” at iO Theatre. Now, Harvey native LaRoyce Hawkins, who plays Kevin Atwater on the NBC companion series “Chicago PD,” who will be doing the “Armando” gig this coming Monday. … Ex-Cubs pitcher Ryan Dempster, who announced his retirement from MLB earlier this month — to join the Cubs front office — was spotted at the Harry Caray’s 7th Inning Stretch at Water Tower Place — where they are working on a new exhibit with Dempster for the adjacent Chicago Sports Museum, where you’ll be able to test your best Harry Caray impersonation against Dempster’s inside the museum’s broadcast booth. … Fans of the Hawks’ Corey Crawford were happy to see him dining at Japonais by Morimoto, joined by a lovely lady friend. Separately, Leann Rimes lunched at the West Chicago Avenue sushi-ery Thursday, enjoying sushi and appetizers with a couple of galpals.