Theme: Homophonous Endings - but you knew that.
20A. Mork's sign-off: NANU NANU
28A. Eastside Manhattan thoroughfare: FIRST AVENUE
35A. Confidentially, in Cannes: ENTRE NOUS
46A. Boat made from a hollowed tree trunk: DUGOUT CANOE
55A. Request for the latest update: WHAT'S NEW
Argyle here. Good start for a new week, eh?
Across:
1. Song of praise: PSALM
6. Madagascar primate: LEMUR
11. "Norma __": RAE
14. Fiber-__ cable: OPTIC
15. Last Olds model: ALERO
16. Make a decision: OPT
17. Massachusetts witch trial town: SALEM
18. Frenzied: MANIC
19. Speedometer reading: Abbr.: MPH
22. Cute Aussie "bear": KOALA
24. What we breathe: AIR
25. In favor of: FOR
26. Native of Damascus: SYRIAN
27. Chinese menu letters: MSG. (monosodium glutamate)
31. Dijon darling: CHERI
33. Brain scan: Abbr.: EEG. (electroencephalogram)
34. Had the best record in: LED
39. Univ. near Harvard: MIT. (Massachusetts Institute of Technology)
41. Unspecified number: ANY
42. Choppers: TEETH. Slang.
50. Ship, to a sailor: SHE
51. Zambia neighbor: ANGOLA. Enlarge if you can; great detail.
52. Suffix with east: ERN
53. Male or female: SEX
54. Pastoral poem: IDYLL
58. Cozy cat seat: LAP
59. Kind of Boy Scout badge: MERIT
61. Ancient region of Asia Minor: IONIA
63. "Lux" composer Brian: ENO. "Lux" is a 2012 album by Brian Eno.
64. Tylenol alternative: ALEVE
65. "Filthy" moolah: LUCRE
66. "Sure thing": "YEP"
67. Eight plus one, to aviators: NINER
68. Disdainful grin: SNEER
Down:
1. Places to buy stamps: Abbr.: POs. (POST OFFICES)
2. Language of Chile: SPANISH
3. On the loose: AT LARGE
4. Property encumbrance: LIEN
5. Golden Arches egg sandwich: McMUFFIN
6. Hollywood's Hedy: LAMARR
7. Stylish vigor: ELAN
8. Café chalkboard listing: MENU
9. Ocean State sch.: URI. (University of Rhode Island)
10. 1990 Stallone boxing film which at the time was thought to be the conclusion of its series: ROCKY V
11. Caesar salad lettuce: ROMAINE
12. Give a hand to: APPLAUD
13. Flammable hydrocarbon: ETHANE
21. There's __ in "team": NO I 23. Bully's threat ender: OR ELSE
24. "Breaking Bad" channel: AMC. The name originally stood for "American Movie Classics".
26. Palm starch: SAGO
29. "Later, bro": "SEE YA'"
30. X, to Cato: TEN
32. Update factory machinery: RETOOL
36. "Toodles!": "TA-TA!"
37. GOP fundraising org.: RNC. (Republican National Committee)
38. Kitchen implements: UTENSILS
39. Humdrum: MUNDANE
40. "Lust for Life" punk rocker: IGGY POP
43. Defining quality: ESSENCE
44. 2000s crime drama set in Baltimore: "THE WIRE"
45. Cast a spell on: HEX
46. Dan of old MGM musicals: DAILEY
47. Tracey on whose show "The Simpsons" debuted: ULLMAN
48. More orderly: NEATER
49. Dinner plate scrap: ORT
55. Chirpy bird: WREN
56. Home with drones: HIVE. A male bee is a drone.
57. Sentence subject, as a rule: NOUN
60. Yale collegian: ELI
62. __ Lingus: Irish carrier: AER
Argyle