Brett Terpstra has coded some remarkable TextExpander snippets including:

the ability to auto hyphenate the clipboard
encode e-mail addresses
paste markdown referenced
auto generate markdown references from your clipboard
create lorum ipsum text using text from word lists from Dune, Foundation, Ringworld, Harry Potter, and Doctor Who.

There is a lot more. If you are a TextExpander nerd, go here and then here. Now go!