I wrote a little plugin for vim that allows you to complete Fortran 90 structures by pressing F7.
http://www.vim.org/scripts/script.php?script_id=2487
The plugin in written in python, so you need to have your vim compiled with python support in order to use it.
The intention is to complete "program", "type", "interface", "module", "subroutine", "function", "do", and "select" constructs. You write the first line of such a construct (e.g. "subroutine foo(a, b)", then press F7, and the script will add the closing line "end subroutine foo" and put the cursor between the two lines, indented by one level.