HTML5 Sugar
This sugar adds autocompletion for HTML5 tags and attributes.
Install using Git
Open Terminal.app
cd ~/Library/Application\ Support/Espresso/Sugars/
git clone git://github.com/minimalweb/HTML5.sugar.git
Install manually
Download the source and uncompress it. Rename the resulting folder to HTML5.sugar and put it in YourHomeFolder/Library/Application Support/Espresso/Sugars/.
