Radiolab recently turned 15 years old and to celebrate, they made an episode that replayed portions of the very first show (when it was called The Radio Lab) and a podcast from the first season (which was about time and featured Oliver Sacks).
15 years ago the very first episode of Radiolab, fittingly called "Firsts," hit the airwaves. It was a 3-hour long collection of documentaries and musings produced by a solitary sleep-deprived producer named Jad Abumrad. Things have changed a bit since then.
Kudos to them for 15 years...I had no idea it had been that long.