Ballad of Gay Tony cheats

gta4.net has the 360 version cheats all in a nice table with pictures.

625-555-0200 Akuma (Bike)
272-555-8265 APC (Tank)
359-555-2899 Buzzard (Helicopter)
468-555-0100 Change Weather
938-555-0150 Floater (Boat)
362-555-0100 Health & Armour
482-555-0100 Health, Armor and Advanced Weapons
359-555-7272 Parachute
267-555-0150 Raise Wanted Level
267-555-0100 Remove Wanted Level
486-555-2526 Sniper rifle bullets explode
359-555-0100 Spawn Annihilator
227-555-9666 Spawn Bullet GT
227-555-0142 Spawn Cognoscenti
227-555-0175 Spawn Comet
938-555-0100 Spawn Jetmax
625-555-0100 Spawn NRG-900
625-555-0150 Spawn Sanchez
227-555-0168 Spawn Super GT
227-555-0147 Spawn Turismo
227-555-0100 Spawns a FIB Buffalo
276-555-2666 Super Punch (exploding punches)
625-555-3273 Vader (Bike)
486-555-0100 Weapons (New & advanced)
486-555-0150 Weapons (Poor)