VS a Diamond Protoss (Thanks Warp, this is a hilarious replay and I don't mind sharing it here since you asked!):
VS a 1739 point Diamond Protoss:
VS a 1620+ Diamond Protoss who tries to get cannons up behind a full wall-off (too late):
VS a Diamond Protoss who goes gate/cyber:
VS a 1430 point Diamond Terran:
As you watch those replays, please note that this strategy is in it's infancy so I make some rookie mistakes (like VS toss I forget to build my overlord after the attack has begun, and that seriously slows my reinforcements - which ultimately allows him to survive much longer than he should have).
EDIT: I've been modifying this build a bit, I will leave my original posted BO etc below, but this is my newest variation on it with a fake-expansion drone to try and throw the enemy off the scent:
Send overlord immediately to enemy ramp. If it's a 4P map, send it to the second closest then move it to the furthest main if he isn't there, send your second OL to the closest.
9 Spawning Pool
10 Extractor (build this when you reach 100 minerals EXACTLY - when it finishes put 2 drones on it)
Send a drone to the ramp - this is your "fake expo" drone. Move it to the expo when you see the enemy probe/scv scout - try to distract them into attempting to "delay" your fast expansion by dancing around the expo and taking potshots at his scv/probe. Delay long enough to get the zerglings down there to kill it. If this doesn't work, pull a bunch of drones if necessary to intercept the worker scout as he's coming up your ramp, you WANT to kill this scout before he see's what you are doing. He might overreact when you do this, but if he's decent he will -definitely- overreact if he spots that early roach warren (and 2 bunkers or 2 cannons will absolutely 100% hard counter you). The idea here is to make him unable to know if you've fast expanded or not. If he builds cannons vs a fast expand he's put himself way behind.
Build one last drone (this is the last drone you will build)
Zergling the second the spawning pool pops (these are going to attempt to stop the enemy scout - hopefully he's chasing your "expo" drone - if not, use the expo drone and 2 lings to kill it)
Roach Warren @ 150 or when enemy scout is killed (your call)
As the roach warren pops, build 3 roaches IMMEDIATELY (you should have just enough gas/minerals). Rally the hatchery to below the enemy ramp. Build a fourth roach asap as a followup.
Now build an Overlord, then -constantly- build roaches every time you have 75 minerals/25 gas, rallied to the enemy base or ramp.
Here is what I originally posted below
So, here's the build order:
9 Spawning Pool
10 Extractor (build this when you reach 100 minerals EXACTLY, so mine a bit with all 10 drones BEFORE you build the extractor)
9 Roach Warren
As the Roach Warren is started, the extractor will finish, put 2 (yes, only TWO) drones on the extractor.
Now build 1 zergling, to attempt to deny scouting.
As the roach warren pops, build 3 roaches IMMEDIATELY (you should have just enough gas/minerals). Rally the hatchery to below the enemy ramp.
Now build an Overlord, then -constantly- build roaches every time you have 75 minerals/25 gas, rallied to one of your initial roaches that are heading into the enemy base (this way they automatically join the fray without alot of extra micro required).
This is an all-in strategy, it's basically the Roach version of a 6 pool ling rush, so fully commit and don't build ANY drones.
The first 3 roaches will be completely finished and heading to your enemy base before 3:40. They will arrive somewhere between 4:15-4:30 (3 roaches with a pair of zerglings) depending on the map and rush distance.
If you are facing a Terran, use your overlord to gain vision of the cliff and begin to snipe out one of the supply depots he used to complete his wall from BELOW the cliff. The new roach range will seriously help here, sniping out any marines that try to move forward, or any scv's that come up to repair the building. Remember to CONTINUE BUILDING ROACHES every time you hit 75 min/25 gas (hotkey the hatch and keep using it).
You'll punch through the wall and run over the enemy. Your roaches are there too early for marauders to become a factor, and the marines aren't plentiful enough to stop you. Just keep on attacking, micro'ing around and kiting SCV's/killing SCV's. By 5:30, when a traditional 7RR would have arrived, you already have 7 roaches IN HIS BASE tearing stuff up. GG.
If you are facing Protoss, you'll run into probably 1 zealot. Rush up the ramp and snipe out the pylon powering the forward gateway if possible, if not, move in and begin tearing up probes. Micro kite away if he attacks you with the probes, try not to let them get a surround. Meanwhile, continue roach production and overwhelm him with roaches. Even with completely screwed up build vs an AMAZING micro using protoss (in the replay above) I'm able to run him over with roaches. I even mess up and fail to build an overlord, meaning my reinforcements take a LONG time to arrive, and I forget to rally my hatchery to my roaches, so they end up standing around below his ramp. I -still- overwhelm him.
So, try it, be amazed, and let me know what you think...