Literally: Ariane 5: What is happening in the last 24 hours before launch?
An excellently made CGI short showing the final bits of an Ariane 5's launch campaign.
Probably not much info for the regulars here, but I haven't seen it presented in this a way.
The video is in French, but due to it's technical nature it's mostly self explanatory. (If not I could provide a transcript)
PS: If this doesn't deserve a own thread or is in the wrong place, mods please move.