I think he's getting better. He used to be awful. Now, I can listen to him call a game, and it's beginning to sound natural, like he's beginning to understand what's happening on the field. That's a big part of it. As he "gets it" more and more, begins to understand the game more, I have seen him get to the point that he's tolerable.
Martin Tyler is the very best. John Champion is very good, too. Ian Darke is a bit rough around the edges compared to some of the English announcers. But then, too, he feels the need to translate the game a bit for American audiences, where the others don't do so because we might get their feed, but they're talking to an English audience.
He has definitely improved, but still does certain annoying things. I can't stand how he Americanizes every name. David is pronounced differently when it's David Villa than David Beckham. You can tell he's getting more comfortable, but his goal calls are still a bit rough. I also think part of my problem involves Eric Wynalda, who annoys me as a color guy.