Generally very fluid, very user friendly, there are many apps available compared with blackberry phone and you can also use certain android apps. Though currently some big apps like skype and instagram not available for playbook but you won't really miss these.

Games, many are available, even angry birds space and plants versus zombies those. HD games too.

Video playback is the best among ALL OSes. Silky smooth 1080p playback (I tried 720p 60fps playback too, smooooth) and you can pinch and zoom while playing the video

Seeking forward and backward is instant. I would say top notch for video playback. iPad and any other tablets cannot match this ^^

You can see my super short review when I first got my playbook (really basic stuff because I just got it not long)

http://www.youtube.com/watch?v=J4zktrnm2OY...=2&feature=plcp