Alfred 2 came out a few weeks ago and I am loving the upgrade. The new workflow system is amazingly powerful and some of the things people are coming up with are great.
I have been playing around with building my own workflows since the release. Alfred's workflow system is very flexible in that it allows you to use whatever scripting language you are most comfortable with to generate the Feedback XML necessary for displaying your content in the Alfred pop-up. My language of choice is once again Python. Daniel Shannon has written alp, a python module intended speed up the development of Alfred workflows written in Python and it works very well.
Each week I check PreviewsWorld to see the comics that are coming out. I then add comics that I am interested in to my calendar. I've written an Alfred workflow to speed up this process.