Whenever I get the chance I am going to convert my videos and put them on youtube. I have Joy Electric at C-Stone '03, Joy Electric acoustic (same time, place), Sf59 acoustic from a club in Nashville, MAP, The Prayer Chain, Danielson and I don't remember what all. I have a whole MxPx set from Cornerstone, but I am not much interested in that anymore.
The best thing is to use a TV tuner for the computer or a DVD recorder that can convert VHS to DVD.
A site like
this one has a lot of Christian concert footage.