* A change in GBP -> NOK exchange rate, to indicate if it's a good time to buy ready for my next trip to Norway.
* Alerts on flight prices to help me purchase flights when they're at their cheapest.
* Daily digest email with content I'm interested in from HN and some web comics.
* A summary of new content coming into my RSS reader.
It works really well for this sort of stuff and I found it fairly easy to get up and running.
I have had numerous simpler projects automating my digital life but I made the (probable) mistake of always starting from scratch and writing stuff all on my own.
Since I set it up a few months ago I've been using it a bunch, it's event driven system is great for when you want to trigger off multiple streams half way through a flow. You can also go back through past events if you want which is really powerful.