Plants vs. Zombies Cheats

Pushbutton and typed
To enter a cheat code press: LB, RB, LT, RT in game

A shower of candy when a zombie dies: pinata
Alternate lawn mower appearance: trickedout
Gives zombies futuristic shades: future
Mustaches for zombie: mustache
Once zombies are killed, they leave small daisies behind: daisies
Toggles the zombie's call for brains-sound: sukhbir
Zombies dance: dance

Achievements
Alive and Planting (25): Survive 40 waves of pure zombie ferocity
Close Shave (15): Win any level after all 5 lawnmowers have been used
Crash of the Titan (10): Defeat your first Gargantuar
Explodonator (20): Blast 10 zombies at once with a Cherry Bomb!
Home Lawn Security (25): Complete adventure mode
Master of Morticulture (25): Collect all 49 plants in the game
Nom Nom Nom (10): Stop the horde using only the Sunflower, Wallnut, and Chomper on any level
Shopaholic (10): Go trunk diving and spend at least $25,000 on Crazy Dave's Twiddydinkies
Smarty Branches (15): Grow the Tree of Wisdom to at least 100 feet
Soil Your Plants (10): Plant your first 10 peashooters
Versus vs Versus (15): Go on a 5 game winning streak in VS. mode
ZFF's 4 Evr (20): Bowl a winner with a friend in Co-Op Wall-Nut Bowling