Depending on how many people are coming - steaks! Otherwise I'm all about burgers etc. Or veggie burgers. Gill some veggies (zucchini, summer squash, onion, bell peppers) or some asparagus/corn on the cob.
For sides you could make a capresse salad - tomatoes, basil, feta cheese. Or your traditional potato/pasta salads. I would also have some kind of fruit. I make a grape salad which is red grapes in a cream cheese sauce (cream cheese, sugar, vanilla)and topped with walnuts. Or you could have fresh fruit with dip (whip some cream cheese and add marshmallow fluff)! Waldorf salad is fun.