The latest trailer for Marvel's Agents of S.H.I.E.L.D. highlights the involvement of series co-creator and Marvel's The Avengers director Joss Whedon. We also see brief glimpses of footage featuring Clark Gregg (Agent Coulson), Ming-Na Wen (Agent Melinda May) and Chloe Bennet (Skye) to get fans excited before Season 1 debuts Tuesday, September 24 at 8 PM ET on ABC with the Pilot episode.