I was lucky enough to meet Catt in the BUPA lounge a couple of seasons ago (along with Steve Piper and Tony Vessey) and I can tell you he has a few more stories to tell.
If you don't ask him, he won't come!
I like the idea of the audience participation one too!
Last night I listened to the Roar from 2 January 2010, the one with Chris Cattlin as guest.
Undoubtedly the finest Roar I have heard. What a cracking fella Catts is. I did note at the end he said he would be happy to come back on, so why haven't you asked him yet?
Come on boys, get him on!!