Universities should offer something like this when trying to teach Haskell or Scheme alongside Java - especially the explanation of why you'd do it is better than I was taught.

+1 - My school (Ga Tech) used Scheme as its intro language when I was there and I could've benefited from being sold on it a little more (too bad there was no Hacker News then). I wasn't alone in being annoyed that I had to mess around with this weird little language before getting into Java and C. I did end up enjoying it though.