Theme: Rhodes Scholar - Yes, that's what you'll be when you get these four homonyms of ROHD.
20A. Providence native, for one : RHODE ISLANDER
34A. Skipped the saddle : RODE BAREBACK
41A. Steered the skiff beachward : ROWED TO SHORE
56A. Crosby/Hope film : "ROAD TO MOROCCO"
Argyle here. The theme is tight and the lengths are long. Many opportunities for musical links. On the Road Again(2:35) Willie Nelson - Michael(Row the boat ashore)(2:46) The Highwaymen.
Bonnie and Victor's last LAT duet was on Sept. 20, 2009, a Sunday. Link.
Across:
1. Get really high : SOAR. Honestly, what was your first thought?
5. Overhaul : REDO
9. Archipelago unit : ISLE
13. Six-sided shape : CUBE
14. Captain's "Hold it!" : "AVAST!"
16. Corrosive liquid : ACID
17. Gillette razor brand : ATRA
18. Do a two-step, say : DANCE
19. Broadway award : TONY. Neat clecho, 33D. Off-Broadway award : OBIE
23. Spectacular failure : FIASCO
24. Nutritional fig. : RDA. (Recommended Daily Allowance)
25. Writer LeShan : EDA
28. Part of PST: Abbr. : STD. (Pacific Standard Time)
29. Saintly glow : HALO
32. Marries in secret : ELOPES
36. Cathedral niche : APSE
39. Hot brew : TEA
40. Wedding vows : I DOs. Or perhaps, "Never again!".
46. Tentacle : FEELER
47. Petrol station name : ESSO. Get it? In other countries, gas is petrol and Exxon is still Esso.
48. Juan Carlos, to his subjects : REY. King of Spain.
51. RR terminus : STA.
52. Prime rib au __ : JUS
54. "From the halls of Montezuma" soldier : MARINE. (2:24) Performed by The President's Own United States Marine Band.
60. Visibly wowed : AGOG
62. "Vacation" band, with "The" : GO-GO'S
63. Baseball stitching : SEAM
64. Kate, to Petruchio, eventually : WIFE. From The Taming of the Shrew, a comedy by William Shakespeare.
65. China's Zhou __ : ENLAI
66. "__ la Douce" : IRMA. IMBd.
67. Well-protected : SAFE
68. Desires : YENs
69. Armchair quarterback's channel : ESPN
Another musical interlude: On the Road Again(4:57) by Canned heat. (A tie-in with 1-Across?)
Down:
1. Eats, with "up" or "down" : SCARFS
2. Bat for a higher average than : OUT HIT
3. Overseas : ABROAD
4. Curls up with a book : READS
5. Commercial on AM or FM : RADIO AD
6. Actresses Gabor and Longoria : EVAs. And another three-letter actress. 61D. Italian actress Scala : GIA
7. Frontiersman Boone, familiarly : DAN'L
8. Hollywood award : OSCAR
9. "Musta been something __" : I ATE
10. Scrabble sheet : SCORE PAD
11. Surprise 2012 New York Knick standout Jeremy __ : LIN. Is Linsanity Over? - Businessweek.
12. Joseph of ice cream fame : EDY
15. Painfully sensitive : TENDER
21. Off-the-wall effect : ECHO
22. Chip's partner : DALE. The cute little chipmunks, not the dancers. Sorry, Lois.
26. Geometric art style : DECO
27. Raises a question : ASKS
30. "Panic Room" actor Jared : LETO. Busy boy; actor, director, producer, musician, and occasional model.
31. More than chubby : OBESE
34. Fishing line holder : REEL
35. Sighs of relief : AAHs. What you do when the stupid dog next door stops its...
36. Barking sounds : ARFs
37. One writing verse : POET
38. Quit cold turkey : SWEAR OFF
42. __ vu: familiar feeling : DÉJÀ
43. Plod : TRUDGE
44. Diffusion of fluids, as through a membrane : OSMOSIS
45. Thunderous noise : ROAR
48. Potato presses : RICERS
49. Pitch a tent : ENCAMP
50. Naval petty officer : YEOMAN
53. Full of rocks : STONY
55. Riveter painted by Rockwell : ROSIE
57. Architectural S-curve : OGEE
58. Eye lasciviously : OGLE
59. Sound of suffering : MOAN
60. "How cute!" sounds : "AW!"s
Argyle