Well, it seems even in the US they like the section of the Ronnie Johns show featuring Chopper Read. I've taken quite a liking to the Chopper section lately. Here's my favourite one:
Chooper does horoscopes - http://www.youtube.com/watch?v=olx_Jifwixc
(WARNING - That linked video has a lot of swear words in it so don't play it at work or school or you'll get owned hardcore like Neville Bartos)
That one never fails to crack me up.
I also like the ones he does on weather, bingo, Christmas and of course, his 'harden the fark up' letters.
Which ones do you like?