Toss vs. Terrans

Although the terrans have weaker units that arent built a whole lot faster than stronger, better, Toss units (not to mention quickly produced zerg units), they are capable of giving toss players a hard time.  Note that there is a major difference between "giving toss players a hard time" and "defeating toss players." Throughout all the games ive ever played on bnet i have seen a total of THREE good terran players.  Im not joking at ALL.  The reason that most terran players suck is because all they do is turtle.  Although terrans have units that are GREAT at playing defense/turtling, most players use them only defensively and dont put together any serious offensive threat.  Therefore, all they can do is keep you out, but cannont kill you. That is what pisses me off about terrans.  Anyway...here i will discuss the GOOD OFFENSIVE tactics ive seen the 3 good players use, as well as show you how to stuff a turtler.

Stuffing the Terran Turtler
My number one rule when playing vs terrans is this: Kill the terrans ASAP!
If you forget about them and kill the other opponents first, you will give the terrans time to make 3 bunkers and but 500 tanks behind them, meaning BAD news for you!!!  Its almost impossible to break through a choke point held by more than 4 tanks.  Templars cant get close enough to use PSI, reavers are outranged by sieged tanks, and all your other ground units wont withstand the tanks attacks.  So....what do you do when you face this situation?  There are a few things you can do.  Fist, try to find another way into his base.  If the choke point is the only thing he has protected, then try reaver dropping, or dragoon droping, even.  Try sending scouts over the minerals to kill his scvs.  You can also switch from ground to air (carriers/arbiters) but it takes time to do this, and it will be playing into the terran players hands if you do, because he will then have TIME to make MORE annoying defense or make battlecruisers or even nukes!! Last but not least, let your teamate help you!! If he is zerg or terran, he will most likely have some unit that can do stuff that you cant, so combine forces and use your teamate as a resource. 

Defending against Nukes
Nukes are pretty nasty.  They can instantly cripple your economy by destroying all your probes and any units nearby, while killing your buildings as well.  Not to mention the psychological impact of knowing that there is a damn ghost somewhere in your city! =)  Most players take WAY too long to get and use nukes.  In fact, if you are on your game, you should be able to kill any terran player in the first 15 minutes of the game! However, if you havent gotten your short game down yet, then nukes become a palpable threat.  The first (and most obvious) thing to do is, make MANY observers!! These build cheap and fast, so make hordes of them, and litter them around the outskirts of your base, as well as over the minerals and anywhere else.  After you have many observers stationed everywhere, make 4 or so scouts (with the speed upgrade) and have them on standby to kill the ghost when he comes into view.  This anti-nuke system works flawlessly, as long as you locate the ghost in time, or course.

Tactics I've Seen GOOD Terran Players Use
Although they are few and far between, good terran players do exist out there in the far reaches of bnet!  To be a good terran player, you hafta resist the temptation to turtle, and pump out marines at the beginning, and get tanks ASAP to harass your protoss and zerg adversaries with.  Good terran players will get plenty of marines quickly, and attack you.  Firebats also do well against most protoss units, so be prepared for those.  A good terran player will also get nukes VERY quickly (10-15 minutes or so).  This is a strong danger if you went dragoon storm or something similar, and dont have any cannons or detectors, and did NOT kill the terran player first!!! And, yes, i speak from experience on this one. =)  In this regard, the nuke can be called "the great equalizer" among terrans and toss.  Nukes can kill alot really quickly, especially when you have no way of seing a cloaked ghost! Thankfully, i had so many dragoons already, i just killed the terran player while he tried to nuke me again =).
So, beware the terran player.....he just might suprise you by NOT turtling and being aggressive!! All the more reason to attack him first!!!