Tom Lane is amazing, and these graphs makes that fact even more clear.

Wow! Postgres, JPG, PNG, TIFF, "The Only Coke Machine on the Internet", and more.

http://en.wikipedia.org/wiki/Tom_Lane_(computer_scientist)

I've posted several questions to the PostgreSQL mailing list, and I think every time he's written a patient, helpful answer. If I lived in Pittsburgh I'd buy him a beer.