Play as Captain "The Man" Onishima
Pick Tab and when he is dancing press A,Y,X,X,B,Y.
Play as D.J.K
Choose Pirahna and press A,Y,X,X,B,Y when Pirahna is dancing.
Get Rid Off Police
At the start of new game hold L/R trigger then press Y,A,X,B,X,Y,A,B.
Unlimited Spray Cans
Choose the character u would like to be.When he/she is dancing hold L/R and press Y,X,X,B,Y,A.