I think my favorite entry is this one:
1972 – Dennis Ritchie invents a powerful gun that shoots both forward and backward simultaneously. Not satisfied with the number of deaths and permanent maimings from that invention he invents C and Unix.
I really found the time line interesting. I honestly wouldn’t have guessed Ruby was that old. Everyone thinks of the 70s as such a fertile time in language development (everyone who was anyone came up with a language), but we easily forget the important milestones in the 50s. Half a century later we are still dealing with some of the decisions made in this time.