Well, this is exceptionally good news: “At today’s Marvel Television Presents panel at New York Comic Con, Head of TV Jeph Loeb announced that Clark Gregg will reprise his role as Agent Phil Coulson in the live-action pilot ‘Marvel’s S.H.I.E.L.D.’! Gregg previously played Coulson in Iron Man, Iron Man 2, Thor and Marvel’s The Avengers, as well as Marvel One-Shots ‘The Consultant’ and ‘A Funny Thing Happened on the Way to Thor’s Hammer.'”
The only hitch is that Marvel explicitly says Agent Coulson will return for the pilot and not the show. Also, if he’s in the pilot and then guest stars from time to time on the show, that means ABC’s Marvel tv show takes place in parallel with all the Marvel movies leading up to the Avengers and not after it. Regardless, Coulson has definitely become a fan favorite within the Marvel movieverse.