Most effective terran rush in SC2

So what's the fastest and most effective terran rush in SC2 ?

I tried building reapers fast, but most of the times I get owned, especially by zergs :s

Against Protoss, your best bet is the 1/1/1 all-in.

Overview

A Cloak Banshee opening into Siege Tank Reactor-Marine all-in was famous amongst Protoss known as errorously as the 1/1/1, this variation masses Marines and adds Siege Tanks and attacks when Siege Tank (2) finishes; usually around the 10 min mark; when Protoss are quick teching to Colossus.

Goal

Using Banshees to force a large amount of Stalkers, Terran then masses Marines with a few Siege Tanks to overwhelm the Stalker-heavy forces of Protoss.

Build Order

10 - Supply Depot
12 - Refinery (1)
13 - Barracks
16 - Orbital Command + Factory
16 - Marine (1) + Supply Depot
20 - Starport + Hellion (1 only)
         @100% Hellion (1) - Tech Lab (1) > Banshees (to 2) 
23 - Refinery (2) + Supply Depot
30 - Barracks > Reactor + Supply Depot
32 - Factory > Tech Lab (2)
39 - Siege Tanks + Supply Depot
52 - Siege Tech > @100% - Attack 

Read more here.

A 6- or 3-Rax all-in rush is what you're looking for...simple, fast, cheap.

http://wiki.teamliquid.net/starcraft2/6Rax_Allin

the 6-rax produces an obscene number of marines very early on, and while it does do damage to your own economy, you can transition if need be, should you do equivalent damage to your opponent.

http://wiki.teamliquid.net/starcraft2/3_Rax_All_In

The 3-rax relies on using the supply depot drop-down as well as using scv's to tank damage, and therefore is the very definition of all-in...should you lose your push, there's no coming back.