Killstreaks in Black Ops comes with 15 options from a Spy Plane to ana Gunship and many others in between including Attack Dogs and a Napalm Strike.
Spy Plane
Shows enemies on the mini-map. Can be shot down.
Required: 3 Kills
Unlocked: Default
RC-XD
Remote Controlled car strapped with explosives.
Required: 3 Kills
Unlocked: 1200 Points
Counter Spy Plane
Temporarily disables enemy mini-map.
Required: 4 Kills
Unlocked: 1600 Points
Sam Turret
Airdrop a placeable SAM turret that destroys aircraft.
Required: 4 Kills
Unlocked: 1600 Points
Care Package
Airdrop a random killstreak or ammo crate.
Required: 4 Kills
Unlocked: Default
Napalm Strike
Airstrike that covers an area in napalm.
Required: 5 Kills
Unlocked: 2400 Points
Sentry Gun
Airdrop a placeable Sentry Gun.
Required: 6 Kills
Unlocked: 3200 Points
Mortar Team
Target three locations to bombard with Mortar Strikes.
Required: 6 Kills
Unlocked: 3200 Points
Attack Helicopter
Call in a support helicopter.
Required: 7 Kills
Unlocked: Default
Valkyrie Rockets
Launcher with remote controlled rockets.
Required: 7 Kills
Unlocked: 4000 Points
Blackbird
Shows both enemy position and direction on the mini-map. Cannot be shot down.
Required: 8 Kills
Unlocked: 4500 Points
Rolling Thunder
Carpet bombing airstrike.
Required: 8 Kills
Unlocked: 4500 Points
Chopper Gunner
Be the gunner of an attack helicopter.
Required: 9 Kills
Unlocked: 5000 Points
Attack Dogs
Attack dogs that hunt the enemy down.
Required: 11 Kills
Unlocked: 6000 Points
Gunship
Pilot an attack helicopter.
Required: 11 Kills
Unlocked: 6000 Points