I have, indeed. I studied APL at school (which shows you how old I am!) I enjoyed reading it and hated typing it :-) I tend to prefer things that are a little bit in between. APL has quite a lot of unusual features, though (some of which were intuitive for me, having been a FORTH programmer, and some of which were not -- having a pretty poor math background). I've been thinking of playing with one of the modern APL variants. I think I would really enjoy it these days.