I do, though I only do so when I'm not likely to be 'triggered' (urgh! hate that word!) by what he's talking about - he does tend to be brutally honest, but that can be a good thing, too.
In an area of psychology where so many provide endless, unsupported content based on nothing but their own experience - Vaknin's work is cutting-edge, well researched & supported, and (considering the concepts & ideas involved), accessible, too. I've certainly learned things from him that I'd never have learned from anybody else.
Initially when I started watching him, I thought the same - dry, somewhat boring & difficult to listen to; however with hindsight I think that may have been a lack of familiarity with his style. He's actually quite funny sometimes! (Anything with him & Richard Grannon is well worth a couple of hours - I actually prefer RG, but for academic content & new research concepts, SV is superior).
.....and 'creepy'? I should hope so....he's been diagnosed with NPD + ASPD several times over......there would be a problem if you didn't recognise him as creepy! ;)
- Creepy doesn't mean that he can't be intellectually useful though. In fact, being a 'Cerebral Narcissist', there is some argument for him being MORE trustworthy (intellectually speaking) than the average neurotypical person. His vanity & self-concept lies in adherence to the rigorous rules, regulations & processes of academia, research & learning; to not do so would be to undermine himself.
He reportedly has a measured IQ of approx. 180 (seriously - he reports that he was tested 3 times, & was a 'child genius' in his home country of Israel). His backstory is fascinating (presuming it's true, of course?!). The other factor to remember is that his 'narcissistic supply' is largely based on attention, adulation, praise he gets as a result of his work.
As he says himself - never forget what he is. After that, as long as you're not his spouse / involved with him personally, take what is useful & leave the rest. :)