RPG Maker XP
Great for looking at moving events!
This script allows any event that can be controlled via Move Event (this includes the player!) to face towards another event.
Use in anything you want, commercial or noncommercial. Credit is unnecessary with this script (considering it's a basic edit of the default code used for Turn Towards Player), but it would be nice.
How to use:
Type "turn_towards_event(x)" in a script action in Move Event, with x being the desired Event ID for your selected event/player to look at.
How to install:
You know the drill, above Main but under Scene_Debug.
Compatibility:
Most likely very compatible with nearly anything.