SAN DIEGO - Joss Whedon's had his hands on one of Marvel's biggest franchises -- the Avengers -- for the big screen and the small screen now, with the addition of "Agents of S.H.I.E.L.D." to ABC's fall lineup. For a man who's pulled off superhero-type characters on TV before for "Buffy the Vampire Slayer" and "Angel," what's the difference of making a successful television show versus an "Avenger" sized movie?

"There's a certain amount you can do and certain amounts you can't [for TV]. You know how to pick your moments and get away with a couple of short-hand tricks to give the thing the scope you want. The good thing is, we're not trying to top the movies. We're trying to do something else," Whedon told HitFix this week at San Diego Comic-Con, talking about "S.H.I.E.L.D." "Ultimately if you don't care about the characters, it doesn't matter how big it is. That's the great thing about TV, you can have mood swings. Sometimes we want to be minimalist and dark and scary and sometimes we're goofy as hell and sometimes the-big-show."

After Whedon and his "S.H.I.E.L.D." cast presentation at the Con, it became apparent that a big question of the show will be how Agent Coulson (Clark Gregg) is back to life after he was killed in "The Avengers," the film.

"We're going to pull that thread until Coulson's sweater is up to here," Whedon teased. With any Whedon-esque twists and turns, there's going to be some chatter in online communities about conspiracy theories on just that. But... "I kinda stay away from that stuff. [Because] you'll see something ridiculously wrong or you see someone who's ridiculously right."

Check out the full video above, which includes Whedon's own theory on Coulson's resurrection (hint: it involves hamster heads).

After five years as a columnist and editor at Billboard, Katie Hasty joined HitFix in 2009 for music and film reporting out of New York. The Midwest native has worked as a writer, music promoter and in A&R since 1999 and performs with her band Numbers And Letters.