@Mor - I know what you mean. When I was working for a bookstore in college, we had a really funny guy as our branch manager. He just adored boy bands (this was in the late 90's) and even though we would tease him, he'd put them on in the store all the time.
In fact, he inspired me to eventually start getting training so that I could have a branch manager career as well.
First I was put in charge of the magazines, then the children's books and finally I was in charge of the shop on weekends.
Eventually I was made assistant manager, but then I applied to be manager of a different store.
Having him support me like that was great though, and it made me want to do my best for the shop. He really made it so that we felt like a family.