Okay, I don't know about you guys but I was disappointed that Gingerbread for the DX didn't have the screen off animation. So, here is how you enable it!
THIS IS FOR THE GINGERBREAD LEAK, NOT FROYO
Step 0. Make a backup
Step 1. Download this file to your computer: http://bit.ly/gj5a7H
Step 2. Connect your phone via adb.
Step 3. Do the following commands:
UPDATE: If you'd rather just flash a .zip in CWM... http://bit.ly/gNdk4Eadb remount
adb push framework-res.apk /data/local/tmp/framework-res.apk
cp /data/local/tmp/framework-res.apk /system/framework/
& enjoy your animation!
Source: [GUIDE] Enabling old-school CRT off animation in Gingerbread | Droid X Root