Something else I worked on: Video for Radiohead's "There There" (2003, apparently).
I think Thom Yorke was at the studio for about three days filming his bits* - and the rest of the twenty-something strong crew spent an entire month (minimum fourteen hours a day, no days off) completing the rest.
Slightly tiring. But it was for Radiohead!
*I just reread this. I didn't mean he was there filming his bits. That would have been weird.