This may sound an odd requirement so let me try and explain....
When I go into meetings which require me putting my phone to silent I always forget to turn it back to normal afterwards! It would be ideal if there was an application for the blackberry that would allow me to put it to silent for a predefined period (e.g. 1 hour) and then automatically put it back into normal profile afterwards. Is there anything around to do this?
The show stopper for me is it doesn't work when the keyboard is locked. Won't work when the device is holstered either but I think it will vibrate so you can be alerted that it needs to be unholstered.