Frank Neumann's video for TAL-Noisemaker is one of the odder demos we've seen.
Noisemaker is virtual analog synth with built in chorus and reverb effects and a lot of modulation possibilities. Best of all, it's free.
"I had the pleasure to make the main presets for TAL's new Soft Synthesizer Noiz3m4k3," says Neumann. "it's a nice little synth. i had to make a small demo song with it, as i created the presets, so have phun."
See Sonic State's earlier article on Noisemaker for details and the TAL site for the free download.