This is a Haskell program that prints out a Perl program that prints out a Python program that prints out a Ruby program that prints out a C program that prints out a Java program that prints out the original program.

However, you can configure it yourself to use any sequence of languages from the ones it knows. Any non-empty list of languages will do, including length one. You may start hitting language line length limits if you make your list too long. Note that you can repeat languages so you can give someone some Haskell which decays into Perl after n iterations.

I've only tested it under MacOS X. I don't know if there are carriage return/linefeed issues with other OSes.

Change the list of languages in lang if you want a different sequence of languages.