Github repo: https://github.com/jgallen23/layouts
I personally find that I don't need anything more than what Spectacle gives me (splitting windows is really it). That said, I love me some Alfred workflows. Alfred is the single best software purchase I've ever made.
My alfred workflow library is incredibly sparse at the moment, so if you have any other good resources you'd like to share, that'd be great.
The one I use the most, by far, is "Plain Text Paste," which I use almost every time I paste anything (I use the hotkey CMD-SHIFT-V). It's here: http://cachefly.alfredapp.com/beta/Plain%20Text%20Paste.alfr...
The only other workflows I use regularly are hotkeys to open websites I visit regularly, like our own website and our WordPress log-in control panel.
I'd too would love to hear which workflows other HN readers use a lot.
I have a similar one to yours that creates a new plain text document from text on the clipboard.
My most often used one is Open current safari tab in chrome. I prefer using safari as I seem to get the best battery life using it. I don't have flash installed so any page that may have a flash component just gets opened in chrome using that Alfred workflow.