An interesting thing you can do if you are Protoss and have mind controlled an SCV is this: Find one of your opponent's bases that is susceptible to an attack by Siege Tanks. Float an Arbiter over to the attack site(Now your Arbiter will NEED Recall, and Khaydarin Core helpz). You could use one to four Arbiters. One Arbiter you can float over easily, but 4+ Arbiters will need a good destraction- an attack with a single Reaver, Templar, and three Zealots will be good enough to give you time. Now get your Arbiters in position and cluster X number of Siege Tanks.Now use Recall and the Siege Tanks will arrive IN SIEGE MODE and start peppering your opponents defence. You will need backup- Observers work good for spotting and detection. Corsairs work well against most air units, although if it's to be a heavy attack or leapfrog you'll need a Carrier/Wraiths for Devourers. Also, you could recall Tanks and a Carrier ONLY to the little pocket behind your opponents minerals and start victimizing his workers before he even realizes what's happening >:). The reason I say tanks instead of Reavers is because Tanks will have better range, and can go with less support because you don't have to build shot's for them. Templar could work, but they can't stop Bunkers and other defensive structures.... A Carrier(s) with Observers and Tanks behind the mineral patch is awesome! The Carrier(s) fend off air, Observers serve the double purpose of spotting and detecting, and Tanks slaughter ground! What's more, the minerals give you an instant semi-wall in! Also, Templar/Tanks/Observers BUTCHER Lurkers, and Tanks kill those dumb Templar before they get close! The wall-in the minerals give you is invaluable, and all these factors mean an attack from 'round the mineral patch can hold it's own for a long, long time! Just make sure to kill Lurkers/Templar before they get close enough to touch you... And even if they do, an Arbiter back home can recall your guys back so you can have nearly Zero Casulties! And with enough Arbiters, you can Recall a ton and strike from around the minerals again and again! If possible, position one Arbiter behind each mineral site and move rapidly around! If you do this right, the poor sap won't know what hit him! Even if you don't catch him off guard and your succesful, you can devastate his economy and totally outbuild him!

CreepColony's Opinion: Can work well with the notorious carrier/arbiter rush.