Following news that RIM made an initial build of its QNX-based OS simulator available for Windows and Mac, company Co-CEO Mike Lazaridis demoed RIM’s tablet live for the first time this morning at the Adobe MAX show. When RIM announced its upcoming BlackBerry PlayBook tablet last month, the company chose not to demo the device (because it didn’t have any working prototypes on hand) and caught a good amount of criticism as a result. Following the ordeal, we imagine prepping a live demo became a priority and today, RIM can finally check that milestone off its list. Hit the break for a video of the PlayBook being demoed on the big screen at Adobe MAX and let us know what you think.