58. *Guffaw from the gut : BELLY LAUGH. Belly Dance.
17. *One of three in a daily diet : SQUARE MEAL. Square Dance.
24. *A roll of two, in craps : SNAKE EYES. Snake Dance.
48. *Opening night "Best of luck!" : BREAK A LEG. Break Dance.
35. Fred Astaire and Ginger Rogers, e.g., and, literally, what the first words of the answers to starred clues can be : DANCE PARTNERS
Melissa here. This was smooooth as a soft-shoe dance for me, with only a few question marks that filled in easily with perps. Fun dancing theme, with a center reveal.
Across
1. __ Khan: Rita Hayworth's husband : ALY. Right off the bat, no clue. I feel like I should have known Prince Aly Kahn's story.
4. Composure : APLOMB
10. Turkish title of honor : AGHA
14. Life story, briefly : BIO
15. Cigar-smoking George's spouse : GRACIE
16. Swag : LOOT
19. Former Mississippi senator Trent : LOTT
20. Where sailors go : OUT TO SEA
21. Like a disengaged engine : IN IDLE
23. Plant anchor : ROOT. Aerial roots of a curtain fig tree in Australia.
26. Bring up, as a topic : BROACH
29. Grant permission : LET
30. "Dig in" : EAT
31. Glacial historic period : ICE AGE
34. The Macarena, pet rocks, etc. : FADS
39. One, to Beethoven : EINS. German.
40. Regular practice : RITUAL
41. Quagmire : BOG
42. Fed. assistance program : SSI
44. Key related to D major : B MINOR
52. Pear center : CORE
53. __ powder : TALCUM
54. Unevenly balanced : LOPSIDED
57. Confident "Are you the one for this job?" response : I'M IT
60. Copenhagen native : DANE
61. Abode that's abuzz : APIARY. Tried beehive first - one too many letters.
62. Hawaii's Mauna __ : LOA
63. Those, to José : ESAS
64. Shorthand pros : STENOS
65. Sinusitis-treating MD : ENT
Down
1. Soak up : ABSORB
2. Bar bottle contents : LIQUOR
3. "I'm not the only one?" : YOU, TOO?
4. Farming prefix : AGRO
5. Air Force One VIP : PRES
6. Metal-threaded fabrics : LAMÉS
7. Atlantic or Pacific : OCEAN
8. Soccer star Hamm : MIA
9. Resemble : BE LIKE
10. TV's "Kate & __" : ALLIE
11. Name on a blimp : GOODYEAR
12. Detective's promising clues : HOT LEADS
13. Swears to : ATTESTS
18. Reaches : ATTAINS
22. Trawling gear : NET
25. Red flag : ALERT
27. 300, to Caesar : CCC
28. "__ Haw" : HEE
32. March follower : APRIL
33. Moo goo __ pan : GAI
34. Woman's name from the Latin for "happy" : FELICIA. Felicity didn't fit.
35. Scenes in shoeboxes : DIORAMAS
36. Actress Jolie : ANGELINA
37. Place for a bath : TUB. Yes, please.
38. '60s war zone, briefly : NAM
39. Drop in the sea : EBB TIDE
42. Product identifier similar to UPC : SKU
43. Ballroom dances : SAMBAS. More dancing. Kizomba evolved from Caribbean zouk, African semba, and Brazilian samba.
45. Little lump : NODULE
46. West Coast state : OREGON
47. Cardinal's headgear : RED HAT
49. Entr'__: play intervals : ACTES
50. "Dallas" Miss : ELLIE
51. __ Heights: disputed Mideast region : GOLAN. Look.
55. Fire: Pref. : PYRO
56. Stone and Stallone : SLYS
59. Able, facetiously : EPT
Melissa