In his latest Across the Sound podcast Joseph Jaffe mentions that he's doing it from a plane somewhere over the atlantic.

GNER trains have wifi connections in the UK and I've blogged from a train but not from a plane, I don't travel upper class enough.

What's the strangest place you've blogged / podcast from? 

One thing that has always made me laugh is extreme ironing you could cross this with blogging and get extreme blogging.  I don't know if you'd be able to call this a sport but could be a way for the telco's to promote their wireless data access.