Blue dyed milk drops into red dyed milk.
I like this one because of the transparency of the splash. Needed quite a lot of work to brighten up (because I screwed up the lighting) but it was too nice to leave on my hard drive.
2 vivitar flashes, one either side slightly in front firing back at the splash with a white reflector behind. Triggered with a home-made push button trigger wired in parallel to hot shoe sync cables.
Info on creating the splashes : drippy2009.blogspot.com
If your interested you can buy some of my work on Imagekind (Maybe I could then replace my zoom lens i ran over with my car (dont ask!))