[joshuacc]

The first one I remember was the commit that added CoffeeScript to rails by default. https://github.com/rails/rails/compare/9333ca7...23aa7da

[lmm]

The first I remember was https://github.com/MrMEEE/bumblebee-Old-and-abbandoned/commi... , but I guess that was a couple of months later.