His work on Ruby Koans helped me tremendously when learning Ruby. And of course there's rake. This sort of thing feels like an appropriate match to his own contributions to the community. I couldn't give much, but hopefully my little bit can help.
A few notes for the developers of the page: the form fields are wonky on Firefox (upstream on Aurora at least) and I'd suggest a country field for non-Americans.
Also, here's one of my favorite practices to watch Jim do & to practice as well: http://www.youtube.com/watch?v=ronr_CG8x0Y
Thanks for the bug report, I'm opening an issue. Can you email me a screenshot? email address in profile.
You can contribute to these here: https://github.com/neo/ruby_koans
https://github.com/neo/git_immersion
[edited to be more constructive]
More information on Jim: https://en.wikipedia.org/wiki/Jim_Weirich