Gotta agree with those who thought the show was fine - I think some people are a bit nit-picky about how those guys interact on the show. The way I look at it is as if it were 3 buddies chatting about music. At times you're bound to cut each other off when one of them says something that you strongly disagree with.
And on top of that, I'm pretty sure that there's some editing going on, so on occasion it might appear that one of the guys is cutting off one of the others, or the music guest, but that may not be what really happened. I'll have to ask some of my friends who have attended tapings in the past to see how long a show typically went - I know one of them asked a Stump the Trunk question that was never aired, so who knows how much else is edited out to keep the show within the time limits.
Overall, I really enjoyed the show - wish that there had been more, especially with JP chiming in the discussion, but I'm just glad he was finally able to meet and chat with Geddy in person.