Sender, who began working for UPS in 1962, knew which actors were nice, which ones weren't, who drank and who had kids, the 66-year-old driver said in Wednesday's Los Angeles Times.
Whenever Sender delivered to Broderick Crawford's home, the Oscar winner frequently was holding a beer, Sender said.
He often delivered packages to the William Morris Agency, where he ran into Groucho Marx. "'Eeeeey, what's goin' on, kiddo?" Sender said Marx asked him.
Of course, Sender also has a list of who wasn't nice.
"A couple of unfriendlies would be Barbra Streisand and Liza Minelli," Sender said. "They'd be getting their nails done and you'd hold the elevator door open for them and they wouldn't even look at you. They'd never thank you."
Sender switched to driving big rigs for UPS in 1977.