1) NextFrame, University Film and Video Association, $20, $15 if you submit through withoutabox. Early Deadline is April 30, Regular is May 31...
2)ASPEKTY, a Polish Anthropological Film Festival! Not kidding, Deadline is Aug. 1, and it's free! So I think this is def. worth looking into more :)
(Also, Tony and Phil, this is a site to keep in mind: Visual Anthropology
This site has 2 other festivals, one in Taiwan and one in Finland, both devoted to Ethnography and Anthropology, but they have themes. So it might work out for future classes...)
I'll post more as I find them