(I have also sent this by email, but I'm opening an issue just for completeness).
First of all, thank you for all your work in pygments! It's really a useful program, I use it primarily through gist.github.com.
I have written a pygments lexer for cfengine3 policy files (http://cfengine.org/). Cfengine is a very popular configuration management engine.
You can find the code at this gist: http://gist.github.com/571230
I've made it a separate python file for ease of testing, but if it's added to the distribution, I would suggest adding it to other.py.
You can see an example output here: http://zzamboni.org/files/cfengine_stdlib.html
It would be awesome to see cfengine support in pygments! This is my first-ever lexer, so of course I would also welcome any feedback, corrections or suggestions.
Best regards, --Diego Zamboni