Thanks Jason. I've been exploring Flash 5 recently and the tutorial was useful, although I'm somewhat surprised it doesn't also use Flash movies to teach OO. Some of my very early forays: http://www.inetarena.com/~pdx4d/ocn/flash/reciprocal.html http://www.inetarena.com/~pdx4d/ocn/flash/group.html http://www.inetarena.com/~pdx4d/ocn/flash/sumtotients.html The link to Python at this point is simply that the Flash exhibits graphically support what elsewhere I'm using Python to explore (e.g. sum of totients of factors of n = n is explored in numfun.py etc.). In any case, I agree with you that Flash potentially provides a useful into to OO with immediate feedback/ applications. The downside is it's far from free (unlike Python) and the OO model is somewhat more complicated I think (Python's is actually more sophisticated, but conceals enough to make the basics easier -- or maybe I'm just biased, being new to the Flash paradigm). The hardest parts of the tutorial are the special add-on functions the author has to introduce to make the Flash language itself a little easier to use i.e. he's using the language to complete the language (admittedly, lots of successful languages do this). Kirby