Since you mentioned digital SLRs - someone should talk about them and cameras in general in some detail, but I'm not knowledgable enough to do so.
I'll note that there are quite a few now that will record remarkable HD video for a fraction of what a standard definition prosumer camera cost a few years ago. If you're working on a very limited budget, as most fan film producers are, IMAO these are the cameras you should be seriously looking at.
Indeed. Every film project I've worked on in the past 366 days (Polaris, a short film and four music vidoes) have all been shot on Canon Digital SLRs of one stripe or another.