The Samsung Droid Charge is confirmed with Samsung Tech support to have Gorilla Glass, that being said I have the following accessories:
Dock Station/Cradle with spare battery- Works faster than included charger, charges phone first, then diverts power to spare battery charge. Allows a Squeezebox feel of Internet Radio, Clock, Alarm, Web Updates, Weather at your nightstand.
Extended Battery- Gives me 2 days of heavy usage
Extended Cover- Does not add much bulk to phone, looks better than TB/Revo
VZW Hawk Holster/Protective Back- Holster works with Extended Battery
Cruzer Smoke Gray Argyll Case Cover- Works with VZW Holster
Droid X2 Leather Universal Holster- Works with Extended battery, face out, it is a little snug.
Steinheil Ultra Crystal Screen Protector, had the VZW Anti Glare, did not like fact that it did not cover the whole screen and had dull rainbow effect. The Ultra Crystal is as close to the real deal as possible, do not follow instructions applying the protector, put 2 on first, then 1. The protector covers to the edge with a hairs width of clearance, precision.
Hope this helps, willing to answer questions.