I use perl as pseudocode, especially when I have to target multiple languages/platforms.

Its stupidly easy to hack together prototypes of functions to test out data structures and algorithms just using perl and the command line. This helps me think more about the structure of the program and less about the syntax of a specific language, especially languages that I'm weaker in.

Once its working right and thought through, I'll use the perl "pseudocode" as a guide to code in the target language.