There is a slide and video at www.csi.coop. CSI does zero equity co-ops for low income seniors, using the 202 program.
There is a video at www.ncbcapitalimpact.org click on publications and then housing and the Going Home publication which has a shared equity video on the right. It is probably also on www.cornerstone.org. NCB used to have a 5 minute video on senior co-ops, but I cannot find it anymore
www.seniorcoops.org has print stuff, but worth asking about a video.
This may not be what you are looking for, but here is a video about a specific affordable senior housing with services program that has piloted in one housing community in Vermont and is going to to be exapanded statewide:
You can also check out the film "Imagining Home" about the Hope VI redevelopment of New Columbia public housing in Portland, Oregon. http://www.newcolumbia.org/residents/imagining-home-film/
It is more about public housing than special needs housing, but it could be a good fit for your course.