Celeb sightings range from Janelle Monae to ‘Chicago Fire’ cast to Denis Savard

SEEN ON THE SCENE: “Treme” star John Seda, well-known for his role as Detective Paul Falsone on “Homicide: Life on the Street,” dined at Gibsons on Rush Saturday. … Ditto for “Check, Please!” creator David Manilow and his wife, Mary Kenney, executive director of Illinois Housing Development Authority. … Grammy winner Janelle Monae had music fans buzzing at RPM Italian, while dining Sunday night with pals, after her Chicago show. … Derrick Rose helped a friend celebrate a birthday in the Tortoise Club’s Red Room over the weekend. … Siena Tavern was a magnet for the “Chicago Fire” cast — plus stars of its spinoff show, “Chicago PD,” including Taylor Kinney, Jesse Spencer, Monica Raymond, Eamann Walker, Charlie Barnett, Yuri Sardarov and Joe Minoso — where “The Real Housewives of Orange County’s” Tamra Barney was also spied supping. … Rising rockers Two Door Cinema Club made the scene at Old Town Social Saturday. … Hockey great Denis Savard truly wowed the crowd at Paddy O’Fegan’s on Sunday night. … Bill Marovitz was delighted to catch up with longtime friend Haskell Wexler, after the Chicago International Film Festival screened the Oscar-winning cinematographer’s Chicago-based films “Medium Cool” (about the ’68 Democratic Convention) and “12 Days in Chicago” (about the recent NATO summit) — followed by a Q&A with Walter Jacobson. … Speaking of the festival, after the premiere of “The Harvest” at the CIFF, actor Michael Shannon, director John McNaughton and producer Steven A. Jones headed to Paris Club for a bit of a French fare fix.