Just messing around one day, with my Canon Rebel XT DSLR.
Oil being poured into a cup of water.
Music by Bonobo // Recurringedit
I just put the camera on its’ lowest jpeg setting, placed the camera into continuous mode, and locked the shutter down with my wired remote. The oil is being dumped into a tall cylindrical glass, with about a cup of water in it. The whole thing is lit from behind by a diffused clamp light.