I am using the following without a problem

Ketris 1.1 (Tetris game)
Audibleplayer 5.0 (Downloaded book player)
Copilot Q Edition 6.0 (Navigation Software)
PDAnet 1.71 (Computer moden connection)
Tube 2 for Smartphone 2.0
Sandisk 2 GB
Jabra stereo/mic wired headphone
Jabra JX10 bluetooth head piece
Motorola extended battery
Motorola right angle charger adapter
Globalsat BT359W SiRF Star III Bluetooth GPS
Proclip car mount
Verizon magnetic flap holster