Throw some bacon on there first, it will help season the griddle.
I like to put some bacon on, cook it, then throw some hamburger patties on the bacon grease. Put a slice of cheese on the burger right before you take it off and you will have a fine bacon cheeseburger.
I like to cook fajitas on mine, great for cooking the veggies and meat together.
I like a nice thick tuna steak on the griddle, just a little sear on the outside, still red and cool in the middle.
I also like to cook a nice ribeye on the griddle, better than on a grill to me.