Cooking on the grill is always fun when family comes. We like to do chicken on the grill with baked potatoes and corn. If grilling isn't an option, turkey and mashed potatoes are always popular with us. Ham and green beans, and home made mac and cheese are some more favorites. We don't really do anything fancy, just favorite comfort foods!
For the last couple of people coming over meals that I did were grilled burgers and sides, carticuture board, and healthy chicken parmigiana (baked seasoned chicken with pasta sauce and cheese melted on top), a side of spaghetti, and salad.
I'd say anything that doesn't make you have to spend too much time in the kitchen so you can spend more time socializing! Crockpot chicken tacos or a roast, lasagna, gnocchi and salad.