Robbie Nock is probably the worst rugby commentator. He does the English commentary for the Top 14 games we get in Oz and it would be good to get $1 for each time he says um or err. He's very affable though, you've got to like the fellow, and to offset his hesitations he has these top expert comment guys like Simon Mannix, the Racing backs coach. Incidentally, they do most of the commentaries from the Paris studio on the live feed but they don't tell you that.
The FoxSports guys Kearns and Martin are poor but we Aussies put up with them because we understand their humour, but they must be horrible for non-Aussies to listen to. They are biased, but surprisingly their commentary in a neutral game, such ase the Wales v Ireland QF, was quite good. Straight man Clarkie and expert Kafe (on back play) are the best of the Fox team and good in any company.
I like Marshall also and another Kiwi Scottie Stevenson, a main commentator.
Mark Robson in Europe is very good with his one liners and Miles Harrison and Stuart Barnes are my favourite team. Ben Kay is the best expert on forward play and Austin Healy surprisingly good on back play.
But this was about the worst? I don't like SA commentators generally because, whilst not as obviously biased like Martin and Kearns, they just talk to one audience and their knowledge of players outside of South Africans is poor and their recognition of overseas players is also bad. I'm looking at you in particular, Hugh Bladen. Matt Pearce is the best main SA commentator for me and comments by Stransky and Skinstad are excellent.
The most biased guy on the planet is not Martin, nor Kearns, but Brian Moore, the expert comments man backing up the excellent straight man Eddie Butler for the BBC. When England got ejected from the RWC I thought of the man who always has a dig about Australia and Aussies when he can (even in club games) and I smiled.