Well, I find myself looking for a diagramming app for Android on my tablet, download a few, and find 2 decent ones.
Dianoid Lite - Decent app, though not my first choice.
DroidDia - An alpha preview, but still free and for what I like, much better than Dianoid.
DroidDia has a nice, easy UI with lots of good options. It's not Visio, but it's darn good.
Just a tiny little note for anyone that's looking.