Following the close of RIM’s BlackBerry World 2011 conference, the Waterloo Ontario-based cell phone maker on Wednesday issued two video demos showcasing forthcoming BlackBerry PlayBook features we’ve been very anxious to see. Of course we already wrapped things up with a slightly more interesting exclusive, but current (and future) PlayBook owners will definitely enjoy watching RIM execs show off the tablet’s upcoming native email client as well as its Android app player. The Android player looks very smooth for pre-release software, and the email app has a great UI that should be very familiar to tablet users. We can also get a quick taste of the PlayBook’s upcoming native contacts, tasks and calendar support in the videos, which can be viewed after the break.