Gosh, now I understand the pleasant surprise of Adrian Howard in finding that someone is actually using one of his modules, Test::Block. (Of course, that's not such a big deal for Adrian which is very well known as a Perl QA person as it is for me, I think.)
Sometime ago, I was delighted with a journal entry by Acme where Number::Bytes::Human were used. And now I read a splendid review by David Golden on Devel::Hide. That made me proud and anxious to release more useful modules out there and improve the ones I already got out-doors.