I did qualify with "to me, at least". The popularity of the video tutorials shows I'm in a minority, and anyway I do find them entertaining.
Actually, I've watched a few Lynda.com videos, and they're even worse. The ones I've seen are presented by people with no speaking skills and no personality, and they go on for e-v-e-r. They are so incredibly slow that I just cannot understand who could have the patience, or justify the time, to sit through them.
I think video tutorials are incredibly difficult to do, and the LL ones are amongst the best I've seen. Clearly a lot of work goes into them, and the camera work and video production standards would be hard to beat. BUT ... I can get a lot more out of reading a Lightroom book for a few hours than watching the video. Sorry, YMMV, but that's my experience.
I'm happy to pay for them to support the site though, so whatever!
One area which could be improved is to extend - a lot - the use of screen recordings, maybe using software such as TechSmith Camtasia or Adobe Captivate to add annotations and pointers. Although it is nice to switch back to the speakers, honestly most of the time we only need to hear them, not see them. And I'm not even getting into the discussion about shirts.
I didn't want to come across as negative in my reply, which had more to do with Apple's approach to documentation compared to Adobe's, especially as I really do appreciate how much work goes into these videos, and how remarkably good value for money they are - if the medium works for you.
Of course, one could also argue that Lightroom _needs_ more documentation