This always puzzles me. I don't think it has anything to do with the quality of his guests, as Larry gets sod all out of them. I imagine people watch because he's so bad.
To be honest, I only watch it for the guests
I confess I didn't much like Larry in the Cirque du Soleil interview, but when I watched it for the first time, I was just too happy to see Ringo and Paul and co that I didn't much notice the little annoying bits :-/
About the Ringo interview - I really liked it
I only watched from the bit where Ringo was talking about getting away from the pressure in the hotel bathroom, back in Beatle-days... and I didn't know the interview would be on (coz I don't watch much TV these days :B ), so good thing Mum happened to turn the TV on at the right time