Many thanks to all of those who sent in hosting recommendations. I chose TotalChoice Hosting because they had low prices and very helpful support people.
The hosting provider that was mentioned the most (three times), and which definitely stood apart from the rest, was TextDrive. These guys are more expensive, but clearly hit the sweet spot for l33t geek bloggers. Where the run-of-the-mill hosters offer PHP and MySQL, and the feature-stuffed ones add in Python, TextDrive blows out the list with Ruby, Subversion, Movable Type, Wordpress and Instiki, plus some other stuff I’ve never even heard of. If I hadn’t already signed up with TotalChoice, I might have signed up with them (and I still might!).
In any case, if you are in need of hosting, here are the other sites that were mentioned, and that seemed at first glance like reasonable choices, in no particular order: