One of the most appealing slates at CES 2011, RIM’s BlackBerry PlayBook was recently demoed in a video posted on the web by the device’s marker. RIM shows the QNX-based tablet’s browser in action, complete with HTML5 streaming and Flash-based gaming, plus social network interaction.

The Apple iPad can eat its heart out right about now, in spite of having sold millions of units. As you can see in the video below, pinch zooming works great, page rendering is superb and in-page videos work perfectly. More hands-on action will be shown these days in Vegas, as CES 2011 goes on, but till then, the PlayBook looks pretty hot and we’re looking forward for its 4G version, too.