Joss Whedon recently finished filming the pilot for his new TV show, a spinoff of his $1.5 billion dollar movie The Avengers. And we’re all expecting S.H.I.E.L.D. to rock, and to last at least year or two. Whedon’s had a bumpy ride on his way to Marvel Universe supremacy, including more than a few wipe-outs. Here are some major setbacks Whedon’s faced, and what he might have learned from them that would make S.H.I.E.L.D. better.