What if the desktop on your computer was just like your actual desktop? That's the core idea behind BumpTop, a really nice looking graphical overlay for Windows-based operating systems. But as cool as BumpTop looked, you still had to use your mouse and keyboard to manipulate it. As I made clear yesterday, I want those to die. So good news for me today: BumpTop is going all-out multi-touch. And the result is awesome.When we think of multi-touch right now, most of us think of the iPhone. But really, with such a small screen, there are only so many gestures you can do. Multi-touch BumpTop greatly expands that roster, and includes several gestures that it claims to have patents for. Basically, they have gestures that use all of you fingers, and both hands, and even the side of hands. You can "lasso" things, "shove" them, "scrunch" them, and "crop" them.TechCrunch50 Conference 2009: September 14-15, 2009, San Francisco