Gaz and Mike will particularly appreciate this. I'm told it's updated quite frequently so it's worth checking back every day or so
http://www.overheardinnewyork.com/
And the same thing with a local angle, not kept up so regularly though:
http://inpassing.org/
the SF one may be updated less frequently ... but what's there is much smarter. (or at least less dependent on dick references.)
I overheard a pretty great exchange between a man and a woman as I was on my way to yoga last week, in the gym at UCSF. I presume they were talking about the origin of the namesake of Mount Sutro:
Him: He was, like, a real guy, named Sutro. He was pretty rich, lived here a long time ago.
Her: Is that like the Kama Sutro?