Automaton is a VST / AU for stuttering and altering your music inside your DAW of choice. It's $49, and you can check out some examples of how it works on the Audio Damage website, or watch videos of it in action, such as these two from youtube:
via KVR, Sony Acid 7 is coming soon. The new features don't exactly scream "must upgrade" (apart from it working with Vista) but the beauty of Acid has always been it's lack of more features than you could ever need so you can get on with making music. You can compare version 6 and 7 here.
SoundCloud is now open to the public, if you had a beta account then you now have a Pro account for a month, after that you will have to pay for the Pro account.
If you use Steam, you can download AudioSurf which is a racing game that uses the music you listen to create the race track you drive on. It costs $9.99, but there is a demo. There is more information about it on their website, also IGN review it here, they give it 8.6/10.
If you're looking for something interesting to sample check out The Conet Project. They've compiled recordings of numbers stations. You can get these as mp3s from the Internet Archive, there is also a pdf booklet. The official site is here.
Laptop Noise have a free circuit bending Reaktor ensemble called Sputnik which you can grab from there site. They also have another called Laptop Hell.
Also, Martin Brinkmann has a heap of free ensembles for Reaktor on his site.
I've mentioned them before but DSK have heaps of really great VST's. They even make specialist VSTi's, like this one for Asian instruments, and this one for Indian instruments. There's another called Darkness Theory that sounds good, it's for making ambient music. But they've got everything from guitars and drums to a heap of different synths. They are all free too so well worth checking out.