Tom Wright is going to be lecturing on Space, Time and the Sacraments at Calvin College this Saturday. Agh! I wish I could be there. It's $35, which is a little expensive (though it includes lunch - probably a nice college cafeteria lunch at that - Smokin'!), but I'm sure the lecture would be well worth the price.
If you live in the area (and I know some of you do) and you have the time and the cash, check him out. He's a brilliant theologian.