You bet I do. That's an hour of rubber-ducky time working through new architectures with someone who won't get tired of my endless blathering. I've worked through a bunch of bad ideas that way, without embarrassing myself in front of my colleagues.

I also use it to explore topics that I wouldn't spend desktop time on, but that I was curious about. It's like having a buddy who's smarter than me on their special interest, but their special interest is "everything you don't know.". And your buddy's name is Gell-Mann. : - )

It beats passively listening to the radio.