For the slam dunk contest, these are the dunks that will score big numbers press E while gathering and press X (trick button) and you will see your player doing a between the leg dunk. Execute the dunk to perfection and you will score about 48( the least) or 50.
other combinations.. Gather button Trick Button X X Shift + S( hold shift and press s to gather) S Shift+S D Shift+S X Shift+S E C+S D C+S E C+S X C+D D
Notice that the Shift and C in the controls menu, that they are dunk modifiers Good luck