My favorite example of Samuelson's wit is his "algorithm" for solving the Transformation Problem:
1. Write down labor values
3. Write down prices.
And then I think he said, "Voila," if memory serves! (I should confess that when I first read it, I was spitting: at that time I thought, a., that the TP was solvable and, b., that it was very important that it be solved -ah, youth!- and how dare Samuelson ridicule the likes of me).
Of everything he did that I know, I think Samuelson 1958 was the best. A beautiful, simple, funny and earth-shaking paper that changes the way you see the world forever. Anyway, he was a mensch. RIP.