I've built several Nixie clocks from kits, and designed others from scratch. Those projects are temporarily on hold, as the weather has improved, and more important "roadtripguy" related projects take priority. The kit in the video is my favorite of the kits that I have built. It has many features, since it's basically a "hacker" kit. Too bad PD doesn't have a videocamera "hacker" kit. We'd all be in line to buy one I'm sure.
Watch out for the Nixie clock bug. It's a BAD one, like these cams. Many parts you need are readily available on Ebay. Go to Ebay, get yourself some IN-18 tubes and 74141 driver chips, and get started!
The nixie clock kit in the video can be had here. It is a LOT more fun to build than trying to solder teenie wires to a TSOP chip:
http://www.tubehobby.com/
Roadtrip