Great talk. One of the best. His talk with Gabriel, 50 in 50, is not as good, but still quite fun. Well worth watching, but it is much better in person than on video (saw it at HOPL):
Seconded. I saw it at YOW a few years back. If you get a chance to see it live, it is well worth it.
Steele (and Grabriel) are great at doing this talks, they are almost art. Which is why I wouldn't call them so much technical (even growing a language) as they are entertaining and perhaps a bit influential.