Swiftkey -- the Android Central 2011 Editor's Choice for third-party keyboard -- today has received an honor most of us can only dream of, having been immortalized as an XKCD comic by the genius Randall Munroe. The comic actually centers on the Swiftkey 3 beta, the shining feature of which is the ability to type without worrying about hitting that pesky space bar. The prediction engine takes care of that for you, going as far as completing sentences that you never started in the first place. And, as you can see, hilarity ensues.
Swiftkey's also asking what your default sentence is. Just hit the middle of the three prediction keys and see what you get. You'll need to actually be using Swiftkey, of course. (And if you're just getting started, expect to see "I am a beautiful person." You can share your result here.