As suggested in the show, I'd like to say I'm happily using tornado since two years and it works like a charm :) and I would add that the code base is really clean and well written.
We are using it as a core technology at Pysae, a company I co-founded where we track buses in real time using the driver's phone (not sure how our site and apps look outside of France, sorry about that).
Also, the business is picking up and we are hiring, so if you like tornado and want to work at a cool startup in Paris, let me know.