That's the episode. I have it on the set top box to watch again (also because the bit about fixing the local road in 24 hours was hilarious, and so wrong). Clarkson actually choked up when he introduced him, and Hammond's embarrasment at all the fuss was delightful. I am so glad that the Hamster made it.

kate if you're reading this, you can come over to my place to see it. I'll even pick you up and take you home.