Musing about Vids

I've been having some fun looking at some New Who vids, and it's got me thinking about fan vids in general. Once upon a time I actually made some vids myself, with the primitive technology of two VCRs hooked up together, and a lot of luck. So I do sort of think I am qualified to muse about them, even though the ones I made are nothing to the smooth things folk make today.
( much musing, with examples! )