I don't know how much is too much. I'd like to be able to use what languages I want without changing hosting plans. My plan now is just PHP. I want access to

I don't know how much is too much. I'd like to be able to use what languages I want without changing hosting plans. My plan now is just PHP. I want access to python in particular, but also to keep my options open for possibly ruby or lisp in the future. MySQL installation is essential. I basically want to be able to experiment alot and use many different technologies (not anything .NET though).