Doesn't play in Safari for me, but (some of?) the other videos on the site do.
Edit: I've taken a look at the HTML. I'm no good at embedding, but it appears that they're trying to play an MPEG file in Windows Media Player, which I don't think would work.
The movie is nothing special, no need to go checking codecs... it's just MPEG1. Not sure why safari isn't bypassing the WMP embedded object statment and loads up the QT web plugin (like munkle screenshot).
But if you are interested my tech specs are..
OS 10.4.2 build 8C46
Safari build 412.5
QuickTime 7.0.3 Pro
Acid Search .51 (was off)
Pithhelmet (was off)
in /Library/QuickTime
OggVorbis.component
Flip4Mac WMV Import.component
FLAC_Decoder.component
AC3 Codec.component
3ivx D4 4.5.1 for OSX