Spear of the tailed demon
Desert Prison - A huge mass of sand rushes out to imprison the enemy. I haven't read back to Part I for a while, but Gaara uses this against Deidara in an effort to stop the Akatsuki shinobi's movements. Sabaku Rou is HUGE--it looks almost like the Shukaku's claw, in fact. (That dark dot in the center of that pic is Gaara's enemy, everything else is the Sabaku Rou.)
Shield of Sand - The automatic sand shield that acts independant of Gaara's will. Whenever Gaara is danger of harm, it flicks up to guard him from damage. It can withstand nearly any standard attack, whether it be shuriken projectiles, needles, or even explosions. It has been defeated by Lee's high-speed taijutsu, in which the sand shield can't keep up.
Armor of Sand - The armor of sand is an extremely thin, but dense layer of sand that lies directly on Gaara's skin, protecting him should the Suna no Tate fail to protect him. However, this requires an immense of chakra to compact the sand together, and it slows the user down as a result of the extra weight. Thus, Gaara only uses it unless he absolutely has to. But the effectiveness of the jutsu is undeniable--it can more often than not render an attack absolutely useless. It's also why Gaara appears 'cracked' when he gets attacked.
Sand Doppelganger - Gaara's version of the Kage Bunshin, he creates a doppelganger out of sand. He uses this in the fight against Lee, right before Lee lands the final blow of his Lotus technique. He also uses it against Sasuke in their Chuunin Exam match. This is another one of Gaara's many defensive techniques to keep himself unharmed. Interestingly, the sand clone can move just as flexibly as a real human.
Quicksand Waterfall- Gaara manipulates sand so it acts like a massive tidal wave or water fall. He uses this against Lee, sweeping him off his feet and causing him to lose control. Gaara also uses this as a prelude to Sabaku Rou in his fight vs. Deidara. This jutsu uses and somehow procures an immense amount of sand--it literally is a 'sea of sand'. I'm guessing it also uses up a lot of chakra.
Imperial Desert Funeral) - The counterpart to Ryuusa Bakuryuu, Gaara compacts the huge amount of sand created by the former technique in a style similar to that of Sabaku Sousou. As one might expect, quite a damaging jutsu. (For comparison's sake, those dots are Lee and Gaara)
Desert Suspension - Gaara uses sand to levitate himself in the air. Versus Deidara, he hops onto this flying wave of sand, so he can fight the bird-mounted Deidara. Gaara can also levitate a sphere-shaped shield of sand in the air, as he shows in the same fight. This shield, probably sourced from his automatic sand shield, is extremely quick.
Sand Drizzle- Gaara rains sand down on his opponent from above, and an alternative way to lead up to Sabaku Sousou. The wide range of this jutsu can coat the entire area in sand, which gives Gaara the ability to attack from nearly everywhere. Gaara uses this jutsu to prove Kimimaro wrong when the other smirks that Gaara cannot attack if there is no sand on the ground.
Daisan no Me Third Eye - An eye made out of sand. Somehow, the sand condenses to form what looks like a perfectly normal eyeball (as normal as a socket-less eyeball gets, at least). It 'spies' for Gaara when he's enclosed within his sand-sphere defense shield. He also uses it to get answers during the first part of the Chuunin Exams.
Shukaku-Related
Feigning Sleep Technique - Gaara uses this jutsu to force sleep upon himself, thus allowing the Shukaku to take over his body and personality. If an opponent breaks the spell of sleep, the Shukaku is sealed back into Gaara once again.
Extremely Hard Ultimate Defense: Shield of Shukaku- A highly effective, but high-chakra technique in which Gaara summons a shield resembling the Shukaku to defend himself. Gaara calls this up against Kimimaro, whom at the time has the 'ultimate offense'. Gaara loses in this small clash, but manages to survive due to Kimimaro's sickness kicking in and killing him.
Wind Element, Infinite Sand Storm A huge cloud of sand blown at high speed, enough to knock the opponent off his feet. Gaara uses this when partially transformed. It also has the capability to destroy Naruto's Kage Bunshins all at once, easily rendering that jutsu ineffective.
Transformation - No real name for this, I just wanted to cover Gaara's transformations into Shukaku. Gaara can transform parts of his body into the Bijuu, whether it be his arms, legs, a tail, etc.