Not all of the commentaries are good, but some of them are quite funny and Joss does give really good inside info when he does his.

As a result of the commentaries and extra features, I now have a huge crush on Tim Minear and Jeffrey Bell. (and after the extras on Dollhouse, I have a huge crush on Jed Whedon and his wife Marissa.)

You know what else you should check out this summer (though yes rewatch Buffy & Angel so we can discuss at great lengths!) - but have you ever watched Psych? It is a great summer show and The Boy would also love it, I think.