I saw this today on Reddit and had to pass it on.
Astrophysicist Replaces Supercomputer with Eight PlayStation 3s
There are two huge implications here. The first is that the Erlang club's emphasis on parallelizing your code is just as important as many think it is. Erlang wasn't used in this example as far as I know, but the reason this project is doing so well on a game console is the multiple cores are being used efficiently. If you can do that by hand, you're already set. If you can't, keep an eye on functional languages that can use multiple cores (and machines) more easily.
Second, we can start using our gaming consoles as tax deductions! ;) Just kidding! Unless you buy multiple PS3s, I don't think anyone will believe you.
Still, this has some interesting implications. How long before some startup is running their specialized server side code on PS3s? That alone might get someone free publicity.