5: They can really put on a show
7: Commercial endorsement
8: Lacking, along the Loire
9: Like any number finishing with '9'
11: Ernest or Julio Gallo
12: Cutlass Supreme, e.g.
13: Frequent Las Vegas money taker
23: Plum variety, commonly
24: Lobster and beluga products
27: Percussive off-Broadway hit
36: Machine with a shuttle
39: Renege, slangily, with 'out'
43: Carnation's 'contented' creatures
46: 'I'm better than you' sort
48: English poet Alexander
56: Slam dunk point count