Note: This post may contain spoilers. Despite the gods of the tunnels trying to block my way from getting to the theater on time, I managed to make it to the 9:00am showing of The Avengers in IMAX 3D in time to also see some great previews for future blockbusters (it looks like it’s shaping up to be a great summer for movies). Yesterday, I posted about how Joss Whedon‘s Firefly series could be rebooted on an online streaming channel like Netflix. Today, I want to talk about why Joss Whedon may never return to television again. Putting together The Avengers could not have been an easy task. There are multiple movies that have to be brought together. Within those movies, there are multiple…