It's easy to grill shrimp, but doing it well is another matter entirely. They tend to dry out if they're peeled, but you can't bring much flavor to the party with the shells on. Cooking them enough to give any real "grill character" turns them into pencil erasers. As usual, the folks at Cook's Illustrated came through with a clever way to go about it.

The process starts with the sauce, which in my case was butter, lemon juice, parsley, garlic, salt, pepper, and some red pepper flake. Throw these together in an aluminum pan and heat it over the grill until the butter melts and everything is combined. Set it aside. (If you can do a "cool side" on your grill, move it there.)
(By the way--aluminum pans like this are the handiest things ever for grilling. They're 94 cents each at GFS Marketplace.)

Next the shrimp, which are peeled and deveined but with the tails left on. It's usually a bad idea to crowd food together on a skewer like this, but in this case you want to slow the cooking down a little. Douse them in oil, salt, and pepper, and then sprinkle a little tiny bit of sugar on one side. This helps it caramelize and char a little bit without overcooking.

4-5 minutes on the sugared side, then about a minute on the other side.

Take the skewers off and move the sauce back to the grill. Close the cover for a minute to heat it up quickly, then add the unskewered shrimp and toss around for another three minutes or so.

The shrimp came out really great. They were overcooked a bit, but I tend to do that to shrimp; I just can't abide them undercooked. (And yet I love sushi, and don't mind eating them raw. Go figure.) You'll want plenty of bread for the rest of the sauce--in fact, if I were serving this family-style, I'd slice up some good country-style bread, char it a little on the grill, arrange it on a platter, and pour sauce and all over it.
The grain, by the way, in quinoa. I'm trying to eat more whole grains, and this one is idiot-proof--you boil it just like pasta. It's a little dull on its own, so I'll be working on a good way to gussy it up.