I did a couple papers on comics recently and these are a couple of my favourite documentaries that I came across:
Superheroes Unmasked:
http://www.youtube.com/watch?v=TKT0LLPgSnA
Once Upon a Time, The Superheroes:
http://www.youtube.com/watch?v=ySOOLp_SoDw
Great for sources and great to watch, they've both got some serious players in both DC and Marvel in their interviews. And also great if you feel like you need a break from homework :3
For one of my papers I did "The Evolution of the Idealized American Male in Comic Books" which went from 1920's advertaisments (focusing on J.C. Leyendecker) going through to Captain America and propaganda and then leading up to Batman the psychological emphasis that eventually became a major component of writing comic book characters.
The other paper was basically just an excuse to slam Judd Winick on his titles Catwoman (for being sexist but moreover, for being disappointing) and Batwing (for the totally bizarre premise of a middle-aged white dude writing a story about a black man in the congo fighting a villain named "Massacre"...good work guys, it's not like genocide is something we don't joke about) and tying it into how the New 52 was launched as a totally desperate plea to attract wider demographics and new readership.
For the record I love comics~ I know that second paper makes me sound like a hater.