Tyranitar

[SET] - Recommended.
name: Mixed Attacker
move 1: Stealth Rock
move 2: Crunch
move 3: Fire Blast
move 4: Ice Beam / Superpower
item: Leftovers
nature: Sassy
evs: 252 HP / 180 SpA / 76 SpD

[SET]
name: Specially Defensive
move 1: Stealth Rock
move 2: Crunch
move 3: Pursuit
move 4: Superpower
item: Leftovers
nature: Careful / Adamant
evs: 252 HP / 4 Atk / 252 SpD

[SET]
name: Choice Band
move 1: Stone Edge
move 2: Crunch
move 3: Pursuit
move 4: Aqua Tail
item: Choice band
nature: Adamant
evs: 252 HP / 36 Atk / 220 SpD

[SET]
name: TyraniBoah (SubPunch)
move 1: Substitute
move 2: Focus Punch
move 3: Fire Blast / Ice Beam
move 4: Crunch
item: Leftovers
nature: Quiet
evs: 252 HP / 60 Atk / 176 SpA / 20 Spe

[SET]
name: Choice Scarf
move 1: Stone Edge
move 2: Crunch
move 3: Pursuit
move 4: Superpower
item: Choice Scarf
nature: Jolly
evs: 4 HP / 252 Atk / 252 Spe

[SET]
name: Dragon Dance
move 1: Dragon Dance
move 2: Stone Edge
move 3: Crunch
move 4: Fire Punch / Aqua Tail / Ice Punch
item: Air Balloon / Lum Berry / Life Orb
nature: Jolly
evs: 4 HP / 252 Atk / 252 Spe

[Other Options]

Tyranitar really isn't lacking in the movepool department, but it really can't utilize most of it in ways not already mentioned. A Rest, Sleep Talk, and Curse set can be used to sweep late game, however it typically will do little for the team. Also, it will be utterly useless unless all opposing Fighting-types can be removed, and even then, it will unfortunately be of very little use in supporting the team. Dragon Tail is generally a good move, but Tyranitar's wealth of weaknesses are unideal for a phazer, as it will likely pull out an enemy that can attack it for super effective damage. A Choice Specs set could be employed because of Tyranitar's impressive special movepool, but it is rather underwhelming when compared to the massive Attack stat sported by Tyranitar. Generally, Nidoking is superior as a purely special sweeper.