Is there any way to change the default completion key (Esc) in TextMate?
Go to System Preferences->Keyboard and Mouse
Click on the + icon
Locate the TextMate application
For Menu Title type "Next Completion"
Enter whatever keyboard shortcut you want
If TextMate is running, then quit and relaunch it
The completion should now have whatever keyboard shortcut you entered.
Thanks a ton Cocoa Guy!