Grilled romaine lettuce. Gotta be one the strangest sounding things, but it is DELICIOUS! Just rub the cut side of a washed head of romaine with some olive oil, and place it cut side down on the grill. As soon as the grill marks appear (and the lettuce just begins to wilt), remove it, put it on the plate (cut side up) and dress with some shaved parmesan cheese.
Also on these boards
Grilled Parmesan corn