Under the cheats section type the following and different things will happen:
KOALA: all combos unlocked
ROMITAS: next level option
IMIARMAS: all levels open in level warp menu
CHILLOUT: infinite turbo for goblins hoverboard
ARACHNID: all levels and combos unlocked
ORGANICWEBBING: infinite webbing
HEADEXPLODY: unlock spider bowling
GOESTOYOURHEAD: gives spidey big head and big feet
KNUCKLES: play as thug#1
HERMANSCHULTZ: play as shocker
SERUM: play as scientist
REALHERO: play as security guard
CAPTAINSTACEY: play as helicopter pilot
STICKYRICE: play as thug#2
UNDERTHEMASK: play with first person mode
JOELSPEANUTS: gives baddies big parts
THUGSRUS: play as thug#3
SPIDERBYTE: play as tiny spiderman
GIRLNEXTDOOR: play as mary jane
DODGETHIS - causes every hit to be in slow motion, a la Matrix