Quoted from Rarehero:
Did you know you can change the difficulty of the video mode (Level 1, 2, 3) by pressing the flipper buttons before it begins? Sure, it's always the same song but Level 3 is more fun and challenging cuz there are more arrows and they move faster.
It isn't so easy to nail the arrows on 3
You can also press 2L, 1R, 2L, 1R, 2L, 1R, 2L, 1R in attract for a secret message, I would tell you what it is but Tiny E swore me to secrecy.