[fenix_reborn]

Here's one I used in the last Terran broodwar level, where that pesky Torasque keeps coming back. This is a sure way to demolish it before it can hurt you.

Keep a few SCVs on the outside in order to repair the depots as they get damaged. This strat is great against any melee unit charge, especially the big units. Pepper the inside with siege tanks and make it reaver-proof. Keep some turrets about to keep it lurker-proof. Use goliaths inside the perimeter to ward off guardians. Overall, it ends up being expensive to build, but not to maintain. Once it's built, it's a lot cheaper to repair depots than to build everything all over again, if you even survive.

Best of all, the basic formation can be built relatively quickly, and almost immediately on starting the game. You don't even need gas! With this built, your base should be pretty secure, and leaves you free to direct your attention towards other matters, such as mining, force construction, and other stuff. As the game wears on, use upgrades and extra units to refine your base into an inpenetrable fortress.

Good against: Zealots, zerglings, dragoons, reavers, archons, high templar, scouts, arbiters, carriers, scourge, wraiths, valkyries, battlecruisers, science vessels, defilers, queens, hydralisks, ultralisks, mutalisks, devourers, corsairs, guardians, dark templar, dark archons, infested terrans, marines, firebats, ghosts, vultures, goliaths, and many combos of the above.

Especially good against: Zealots, zerglings, firebats, archons, ultralisks, mutalisks, scouts, scourge, dark templar, devourers, infested terrans, and valkyries.

Bad against: Massive waves of guardians, reavers, siege tanks, and Nukes.