Download all the C4 idents in one swoop here (80.2mb *.zip).
Big thanks to Graham and Craig, who within minutes of each other both sent me the latest (and perhaps coolest) Channel 4 ident. And who am I to deny you seeing both?
I definitely prefer these semi-plausible ones over some of the others, but until something better comes along, the whole series is still some of the best stuff happening on TV. Watch the other 14 idents in the series here.