Lulu Garcia-Navarro is the host of Weekend Edition Sunday and one of the hosts of NPR's morning news podcast Up First. She is infamous in the IT department of NPR for losing laptops to bullets, hurricanes, and bomb blasts.
NPR's Puzzlemaster Will Shortz has appeared on Weekend Edition Sunday since the program's start in 1987. He's also the crossword editor of The New York Times, the former editor of Games magazine, and the founder and director of the American Crossword Puzzle Tournament (since 1978).