I agree that andrew castle is annoying - I remember really enjoying the master series tv on the web because the commentators (one from SA I think) just kept delighting in Andy's talent and style (even though he wasnt playing that well!).
I can't stand listening to BBC commentators who keep droning on about how grumpy Andy looks. On another occasion I heard one of them allluding to how Judy doesnt have Tim's mum's deportment. Most recently, I found the commentary on Tim/Jamie in the DC doubles insufferable (even allowing for the fact that it was Tim's last game)
If I had a choice I'd rather listen to foreign commentators who carry less baggage than Castle and the like.
As for the content of his article - I don't think Andy will really challenge for a major in 2008 - but I'd love to be wrong.
I guess I'm not sure what challenge means, for instance I'd think about betting even money he will get to at least one major semi in 2008.