I'm pretty sure that was a commercial, yeah (although it was never shown here in Australia). There's a whole bunch of others as well. Look up "Museum", "Hunted", and "Gravesite".
Wow, that fan-creation of the spiker is fantastic! Does it light-up? Is it heavy? That's really amazing work.
I've liked the Halo game series for ages now, but never been too interested in the props; now Halo 3 has changed that. I want me some weaponry!