First of all I wanted to go with SocialScope, but having those Social Apps Natively on my Device and only have to choose one 3th Party App I cut this one out.
The App I really use the most (while having a Convenience Key) would be QuickLaunch, but SCrid2000 made me reconsider this one as well.
Originally Posted by
SCrid2000 Quicklaunch??? If you can only have ONE app, why Quicklaunch?

The main thing I use Quicklaunch for is to launch other apps

Then I'd end up with BeBuzz! Although I'm never aware of using this App, it's running all the time and keep me informed just great =). Wish BlackBerry implemented this one native within the OS!