"Wait till Otis sees us. He LOVES us!"
Now, remember the ground rules for this week, the band had to be a fictional band, it couldn't have existed in any form before the said movie or T.V. performance.
For today's entry, Otis Day and the Knights was a fictional R&B band shown performing in the 1978 movie National Lampoon's Animal House.
However, the twist in this story is that, following the success of the film, DeWayne Jessie, the actor playing the group's lead singer, acquired the rights to the band's name and created a real musical act that toured and recorded an album during the 1980s. Wikipedia