RIM has now uploaded the full video of its PlayBook's brief stint in the limelight during Adobe MAX yesterday, where Adobe CTO Kevin Lynch and none other than Mr. BlackBerry himself, RIM co-CEO Mike Lazaridis, take the "professional tablet" through its very first public test drive on the keynote stage. The duo run through an MRI scan viewing app -- presumably in an attempt to woo the lucrative medical market -- along with the PlayBook's Air-based video player and browser-embedded Flash player, both of which seem to work pretty well. We also get a quick look at the tablet's multitasking cards, where we see that apps continue to function even from within their card views; it l