If you like siege tanks then this strategy will work very nice for you.

First spend the first 20-30 minutes of the game buuilding a good defense and getting a whole lot of minerals. You might want to tell your opponet no rush for like 35 minutes. Oh and make sure you fully upgrade everything like air and ground attacks and armor. This is very very important so DO IT!

After you are done with getting minerals and getting a great defense build at least 12 factories and 12 starports. Start pumping out siege tanks and valkeries like crazy. Get between 24-36 tanks and as many more valkeries you can get.

Now you are ready to go and destroy your pathetic opponet. Go and use about 24 tanks in siege mode and the rest in regular mode to kill pesky little zerglings and zealots and stuff that can attack at close range. When your opponet tries to send all of his air units at you you will be ready for him with a heck of a lot of valkeries.

While you are attacking keep pumping out siegetanks and valkeries. In case you were wondering why you should have so much minerals the reason is so you can build more units quickly.

This tactic works awesome with me. I never lose with this simple little tactic. It might take a couple of tries to master but once you do you will be unstoppable. Just like me!

CreepColony's Opinion: Whoa, I think 35 minutes is a little too much...people will think you are crazy or something. And the splash damage will probably hurt your tanks so be careful.