I heard that on Mike FM this morning. The guitar solo jam in the middle is pretty good.
That's Berton Averre playing the solo, a very gifted musician and artist who has had a pretty decent career post-Knack. I learned that solo note-for-note back in the '80s (and can still play it) and it's one of the most difficult I've ever tried to match.
From what I've heard Doug was a good guy and very funny, I always liked the Knack's first album, it was pretty basic rock & roll but quite good. When I saw them on some crappy reality show where they reunited old bands they SMOKED "My Sharona", there's a YouTube video of it out there worth watching.