In the Weekend Update sketch, Buck Henry's character's is "Henry Zuckerman". Henry Zuckerman is Buck Henry's birth name.
This is Buck Henry's first appearance as host. He will host nine more time in the next five years. Many consider him as one of the Not Ready For Prime Time Players instead of just a guest host whenever he appeared.
Although this is often cited as the first appearance of The Blues Brothers, it really isn't. Everyone is dressed in bee costumes and Belushi sings solo (Dan Aykroyd is in the background playing harmonica). However, it is possible that the idea of the Blues Brothers may have grown out of this appearance.
While they aren't credited for their appearance, The Blues Brothers are backed by Howard Shore and "His All-Bee Band."