"I worked at a Barnes & Noble in NY as a clerk, but once or twice I'd be called over to the in-store Starbucks cafe to help out whenever they were understaffed. One time, Alan Rickman came up and ordered something, I can't recall what. I wrote "Hans Gruber" on his cup though. He smiled at me when he noticed it."
Usher came into another place wearing pajamas and fuzzy slippers, and acted like a little child. He would hide under the table, giggling and kept getting up and dashing to the door and back. Odd dude. Maybe it was drugs...