My Zenwatch just got a system update this weekend (or I guess Android Wear did, or something), and it's noticeably more badass now.
Some of the basic stuff has changed, like being able to twist your wrist to flip through notifications and junk, but the main thing that is awesome is that it has improved the app integration between the watch and phone to put more useful controls into the watch.
For instance, I have an app on my phone called "Map My Ride" which I use to track bike rides, and it's pretty cool. After the new update, it's now easy to start a ride, pause it, finish it, or check the stats on the fly all from my watch, so I don't even need to pull the phone out any more. This is nice, because it means it's easier to just leave my phone in my backpack.