Awesome! I learned about zt, zb, zz, ^x ^f, and ^x ^i today. They'll definitely come in handy.
This one brought ^T and ^D for indenting in insert mode to me, and starting with -o/O as argument for opening multiple files in splits.
A simple http://github.com/search?&q=vimrc is a goldmine for mastery.
Do it on a line where there is a pair of quotes, parens, brackets, etc.