Probably helps that he is in a field that is so esoteric that he really doesn't have a lot of other people to talk to this stuff about.

It's not like people go home and talk to their partners about vertex shaders for a half hour.

Although in his case he probably could, I believe his wife is very bright.

From what I gather she is, my only point is that when you are in a dense field, generally your partner isn't too enthusiastic when you get into the minutia you've spent a 1000+ hours in that year, so when you get the chance to really talk about it, you gush.

Granted I've watched every QuakeCon keynote that was posted and enjoyed them all (along with reading every .plan). His enthusiasm is infectious. Yet even then he is breaking it down to the big things that happened that year, not the day-to-day stuff.

If it were over the dinner table every night, I'd probably lose my mind.