One I learned recently transferring some LaTeX over to rST is visual highlight => "gq". This breaks up long lines to multiple lines based on your stored text width. It can also be coupled with motions, e.g., "gq}".
Yeah. That's a really nice one. I use 'gqip' a lot when writing prose in latex, md, etc. One really cool thing is that it respects comments, so it will split long comment lines into multiline comments as necessary.
