My absolute two fav things to do on our Weber is :
2 Butterflied Lamb, salt, pepper, fresh rosemary sprinkled, garlic, rolled and rotisseried using the Weber rotisserie with grated cucumber into yohurt, with salt, pepper, oil and lemon juice as a side. Freshly made buns.
and Last Meal Ribs. It's a fair bit of work and practice to get them right, but I can tell you, I've never had better ribs anywhere in NZ.