I had a prank program for use on lans a long time ago that was a total riot!! You slipped the receiver part into the targets pc when they aren't around or if you have access to a drive on there pc all the better. once its in place (26bytes) you have a control panel that offers a whole selection of fun stuff to do th them.
1 Desktop Earthquake desktop shakes around and speakers rumbled
Had a timer to start on a schedule or trigger after you left.
2 Reverse the l and r mouse buttons that was another winner hehe
3 Drunk mouse mouse goes everywhere but where you want it to go. would slowly creep off screen completely by itself LOL
4 restart PC LOLz
5 move icons around was funny to watch them freaking out as stuff moved on them.
6 random blasts of music, women screaming and sex noises and occasionally a voice screaming so n so is viewing pr0n!! very loud!! was so hard not to crack up when his comp started screaming MORE MORE OH GOD HARDER real loud and he couldn't turn it down without unplugging the speakers. I could imagine that in a busy office rofl I saw a video a few days back with some friends pranking a guy with animal noises sheep baaaa ing and a guy grunting in a office full of women
7 close desktop program or open a random proggy
a few other funny things that would make someone who didn't know go psyco!!
I used it on my roommate and sometimes just couldn't stop laughing it would be so funny!!
I have my comp in a back bedroom that is covered floor to ceiling with 3 layers of carpet to deaden the sound. (I have a killer HT setup in there) only have one neighbor they are on other end of house so I can do anything I like at any time.
My roommate was just getting started with PC's and he had it in my room so I could "help" him easier
LOLOLOLO OMG the look on his face when stuff would start doing weird things was just priceless!!
I'd trigger that desktop earthquake then getup and go by his side of the room so it didn't look suspicious.... and I could watch his reactions better Man that was so much fun messing with him!!! It went on for like 2 weeks!
I had him convinced that there were spirits on his drive!! He almost went out and bought a new comp rofl thats when I had to tell him... He took it alright but was forever looking my way after that when his comp did some odd thing
Forgot what the name was.... got it off ZD Net at least 9 years or more ago.