Here are three promotional videos which are a bit different from the stereotypes.
The first is Empty Pockets Library by the Australian comedy duo called Empty Pockets, selling you public libraries - great if you like slapstick!
The second is Need Information ! Contact your special librarian today. Okay, maybe they're exaggerating a bit.
The third is Need Information ! Contact your academic librarian today. Okay. maybe they're exaggerating a bit too.