I'm not one to normally spread stuff like this, but this is a pretty darn good offer and I know a few people on my list might well be interested in this.
There's this software package called messiah:studio, and it's an award-winning animation package which has normally sold at either $499 for the basic version or $1195 for the Pro version.
Currently, however, they're doing a viral marketing experiment where you can get them for $10 or $40 respectively, with the caveat that no copies of the program will actually be given out until they reach their target on the number of sales amassed through this offer. (If they don't reach their target by the end of the experiment, everybody will be refunded.) Versions are available for Windows and Mac, with another option for Linux/WINE (which I assume is just the Windows version).
The page on their site detailing everything and with the progress bar is http://projectmessiah.com/x6/shop.html . Note that when the progress bar reaches 100%, all orders for the offer will be closed off, and since the bar is already above 50%, you may want to hurry.
You may want to download the demo first in order to make sure your computer will run it.
Full disclosure: That's not an affiliate link or anything above, though I do have an interest in getting this out as I'm one of the people hoping to get a copy. I really do think this will be of interest to a lot of people though, considering. I'm not otherwise affiliated with them; I heard about the offer from a friend on my reading list.
(Don't worry, this is purely a one-off; I'm not going to do this any more often than I already have been doing it.)