Kinda digging the new update to Zephyr. Reminds me of my Touchpad in swiping up to get rid of the app you are currently in. Sure activator can do the exact same stuff, but this is more Apple like in its approach and smoothness, plus it also has a WebOS feel to it. I have both activator and Zephyr going simultaneously for different things, but Zephyr is my go to tweak for closing apps and getting to the mutlitasking and itunes player dock.