Here's a circuit-bending simulator you can try... and it's FREE. It's a Cubase VST, which means it comes as a plugin DLL which you can use in any of your favourite host programs, including Fruity Loops and anything that accepts Cubase plugins/VSTi's.
But I like to run the hundreds of virtual synths I have as standalone desktop programs, by running it with SaviHost... a program that will let you run any virtual instrument or virtual effect as a standalone program, without the need to load it up in a host program. It's a standalone host, basically. Anyway, it's really cool and you can get it here:
Robot Juice (Circuit Bending VST):
http://freemusicsoftware.org/487SAVIHost (Standalone VST Host):
http://www.hermannseib.com/english/savihost.htmLet us know what you think!
*Edit: Let me just say... that no matter how cool and fun circuit bending may be, the world of software synths is just incredibly amazing and I never grow tired of plunking away at the keys of a good virtual instrument. It would literally cost me millions of dollars to buy the real instruments that I have collected for free with downloaded VST's. (I'd also need a studio the size of an aircraft hangar to store them in too!). Software Synths absolutely
ROCK!