There are several good and recommended vendors of screen protectors for the BlackBerry. These have been mentioned over and over in the threads at BlackBerryForums.com
1PC NEW RIKO Photoelectric Switch PK5-DU03N #017
NEW Omron Mechanical Touch Switch D5B-1023 BNIB
MISOL 12V Timer Switch Timer Controller LCD displayprogram/programmable timer...
McDonnell & Miller Controller No. 5M Cut-Off Switch Pilot Duty Brass Mount NEW
McDonnell & Miller Controller No. 5M Cut-Off Switch Pilot Duty Aluminum Mount