Homicide: The Movie comes at the end of the crime series' seven series run. I only caught a handful of episodes myself, but I could tell the quality just from that glimpse. Giancarlo's character only came in for the last season, which then transferred to the movie. He joined the regular cast (including Quote of the Month alumn Yaphet Kotto) to send the show out on a grand note. From what I've read, they did. And Giancarlo's Officer Giardello gets one of the last lines:
Det. Frank Pembleton: "Death is every day. Death goes on... and on and on."
Officer Mike Giardello: "And that's because life... goes on and on."