I grilled a pizza this afternoon.  I made the mistake of making it too big, and then I oiled the crust and turned it oil-side down on my pizza peel (so I could put the oiled side down on the grill).  Big mistake, as it didn't slide off (of course, dummy!), so I had to push it off with a huge spatula.  By the time I got it on the grill it was shaped like a huge amoeba!  Still, it firmed up, and I flipped it over, topped it with some sauce, sliced tomatoes, fresh mozzarella, fresh basil and artichokes.  It ended up pretty good for the first attempt, and it was a lot of fun.