Jessalyn Sarah Gilsig is a Canadian actress. She is best known for her roles as Meredith Gordon in Heroes, Kayley in Quest for Camelot, Lauren Davis in Boston Public, Gina Russo in Nip/Tuck, Det. Kelly Ronson in NYPD Blue, Terri Schuester in Glee, and as Siggy Haraldson in Vikings.
