MJD ran a "Perl Quiz of the Week" a few months ago but it petered out, probably due to lack of spare time on his part as much as anything else. It's a pity, because the questions he came up with were very interesting, and he took the time to develop "beginner" and "expert" variations on the question.

It would be good to see this project revived. Surely there's someone out there with enough tuits to take it over? No doubt mjd has a backlog of questions to get the ball rolling again. The web site can be found at perl.plover.com/qotw.

Note that one of the reasons the discussion was so interesting was because he didn't specify such-and-such a module, just "here is the problem, solve it". Sometimes the answers involved modules, sometimes not, but in all cases the results were very interesting.