SERIES PREMIERE: Hoping to cash in on the big audience attracted by the How I Met Your Mother finale, CBS uses the time slot immediately following it to launch a new sitcom featuring young people who hang together whenever possible, despite having separate lives. It’s a wasted opportunity, however. This new series, based on its concept and content, may as well have been titled ‘Friends’ with Worse Writers. This is not a recommendation. It’s a warning. Run away, run away.