Edit: I guess I will do a sample one that most people know about just to show what I mean
<b>Big Game Hunters 12 Cannon Rush</b>
Take opponent (preferably not Zerg) out in the first 3 minutes or so
Some cannons at your base
*follow-up with double cannon; more detailed explanation below
At the 12 o’clock position in BGH there is a spot behind the mineral patch with an extrance <i>exactly</i> two matrix square wide, with the edge of the screen and the mineral patch wedging it in perfectly. If you start off near this place (say, near the 10 or 2 positions) and manage to get a probe inside this nook and seal the entrance with a Pylon, your opponent will find it tough to kill the 600-HP structure as your cannons finish and start decimating workers and the main building.
If an experienced Zerg player is handling the defender, your chances of success are nil unless they are going for an early double Hatchery. Sunken colonies can be set up faster with multiple drones and have more HP.
If you are playing a Terran the Terran may well give up on the base, float the CC away, and send all units to attack your base, which would be completely open. That is, you are extremely prone to a counter worker rush that would get you killed. You should probably set up a cannon or two at the same time as you’re performing the offensive cannon building.
Protoss players are by far the easiest to perform this on. Unless they are very fast, they will find it hard to kill off the Pylon in time.
I’ve never actually died to this particular strategy, but I’ve seen it work very effectively on several Protoss and a Terran once. There have been two instances where people tried to use it on me: both by the same guy (and trust me, he’s good); once while I was Terran and once while I was Zerg (unfortunately for him)
As the Zerg i set up two sunken colonies and they killed the cannons before they had time to even finish. Needless to say he died quickly to a zergling counter after that.
As the Terran I tried to kill the Pylon, but that didn’t work so well. I brought it down to 200HP before the cannons finished, so I had to float my Command Center. However, I had several marines by this time and I just attacked him with about 15 SCVs and 3 Marines and got his Nexus.