OK... I've asked the same question on this and other boards and gotten pretty much the same response... which is hardly any..
I interpret that to mean that all the videos presently on the market are not getting anyone excited... My experience with them is that most of them are terrible... some are OK...
The Arbormaster climbing tapes do a decent job of coverring the basics though they were produced in '96 and there have been a lot of advances since then. They are also short and do not go into much detail or discuss variations.. (ie they show footlocking using a prussic, but make no reference to using ascenders or single line technique.)
I haven't seen their saw technique tapes..
The NAA rigging tapes were a waste of time to watch... not to mention $160..
The Chisholm crane tape is light on usefull information (sorry Mark)
There is a set of tapes by INternational Paper on "coaching the pro chainsaw operator" that does a pretty good job of teaching plunge cuts and back release felling technique... though not much else in almost 4 hours of tape.
God Bless All,
Daniel