This is something I discovered while playing around with the CTF script...
Current syntax is:
/obs - Toggle Observing (if you start observing you'll be in the last mode you were on)
/follow fly - Start Free-fly mode
/follow flag DISTANCE - Start following flag, keep a distance of DISTANCE from the flag
/follow goal DISTANCE - Start following goal, keep a distance of DISTANCE from the goal
/follow NAME DISTANCE - start following NAME's tank, keep a distance of DISTANCE from that tank
In case you are not observing /follow automatically starts observing but you'll need to use the /obs command to exit.
You will need to use the command again if the player you are following dies! You do not need to do this for the flag and the goal tough.
IMO, this will be great for recording

Just place this file in the Codes folder and delete the existing Observer.cs and Observer.cs.dso. Configure the permissions for the new code in the ACASv3 Options (as by default no one can use it)
Currently this is closed-source as it's a BETA and might have some bugs, so install only if you want. It ONLY works with ACASv3!
Images:
http://xs132.xs.to/xs132/08406/ttobsfollow1690.jpg
http://xs132.xs.to/xs132/08406/ttobsfollow2930.jpg
http://xs232.xs.to/xs232/08406/ttobsfollow3871.jpg
Enjoy!
EDIT: Updated the script with a fix for the GUI-Arguments.