L1, R1, R2, Circle, Left, Down, Right, Up, Left, Down, Right, Up - Health Cheat: Vice City;
L1, R1, R2, X, Left, Down, Right, Up, Left, Down, Right, Up - Armour Cheat, Vice City / Health, Armour, Money Cheat : San Andreas;
Quite a few of the San Andreas and Vice City cheats I remember. They just all come rushing back once you remember one of them. Childhood? Well spent.