SO COOL.  SEE a backstage time-lapse of an entire episode of SNL

It’s a whole show in 2 minutes, and it’s fascinating to see how effectively Saturday Night Live is able to use a relatively small studio for a show with so many set changes.  P.S. This appears to be from last weekend’s Anna Kendrick episode, which you can see in its entirety here (sans a couple of sketches they can’t put online because of rights issues).