Theme: Catbird Seat? - I can see Tuesday from here.
17A. What the star gets on a marquee: TOP BILLING
23A. Dejected: CRESTFALLEN
37A. Level of optimal accomplishment: PEAK PERFORMANCE
47A. Meeting of world leaders: SUMMIT TALKS
58A. Honorable ... and like the starts of 17-, 23-, 37- and 47-Across: HIGH MINDED
Argyle here. Not much to say. A couple of clunkers but on the whole, a pleasant Monday.
1. Poets: BARDS
6. Ocean breaker: WAVE
10. Former Iranian ruler: SHAH
14. From another planet: ALIEN
15. Golfer's club selection: IRON
16. Golfer's target: HOLE
19. Express checkout lane unit: ITEM
20. "__ Haw": HEE
21. Contemptuous manner, in slang: 'TUDE. (attitude)
22. "Pet" annoyance: PEEVE
26. Wrap tightly, as in bandages: SWATHE
30. Poker holding: HAND
31. Charged atoms: IONS
32. Madame of physics: CURIE. Marie Curie, (1867 – 1934)
34. Guy's partner: GAL
41. Bygone jet, briefly: SST. (SuperSonic Transport)
42. Act with passion: EMOTE
43. Caution: WARN
44. Song at the Met: ARIA
45. Like most peanuts: SALTED
52. Name on rented trailers: U-HAUL
53. Lane with a nose for news: LOIS. Reporter for the Daily Planet.
54. Pasta suffix: -INI
57. Dirt road grooves: RUTS
61. Emancipated: FREE
62. Pigmented eye layer: UVEA
63. Watchdog warning: GROWL
64. Part of NIMBY: YARD. "Not In My Back Yard"
65. Swiss capital: BERN. Bern or Berne.
66. Foul, weather-wise: NASTY
1. It's drawn in a tub: BATH
2. Natural skin soother: ALOE
3. Unlike green tomatoes: RIPE
4. Star of the ball: DEB.(debutante)
5. Tattletale: SNITCH. BLABBY CAT.
6. Witty Oscar: WILDE
7. Astrological Ram: ARIES
8. Maria __ Trapp: VON Sound Of Music. (Today's French lesson.)
9. Subj. with grammar: ENGlish
10. Handheld riot gear: SHIELD
11. Marriott facility: HOTEL
12. Advil competitor: ALEVE
13. Macho guys: HE-MEN
18. Tempt: LURE
22. "The Hunger Games" nation: PANEM
24. Severe pang: THROE
25. Carnival: FAIR
26. Drinks that make a drink last: SIPS. Verb that makes a noun last.
27. Troubles: WOES
28. Vet sch. course: ANATomy
29. Disdainful click: "TSK!"
32. Zagreb native: CROAT
33. N.Y.-based educators' union: UFT. United Federation of Teachers, a New York City affiliate of the American Federation of Teachers. A bit of stretch.
34. Insect in a dusk swarm: GNAT. Males assemble in large mating swarms known as ghosts, commonly at dusk.
35. Realtor's lot unit: ACRE
36. Allow to borrow: LEND
38. Danger: PERIL
39. Give out: EMIT
40. Tapered tool: AWL
44. Tickled: AMUSED
45. Less than 1%?: SKIM. Milk!
46. Give, as homework: ASSIGN
47. Like the beach during a storm: SURFY. Ugh!
48. "Star Trek" lieutenant: UHURA."Oh my!"
49. Alma __: MATER
50. Rags-to-riches author Horatio: ALGER. “Go West, young man” may well have been a paraphrase of advice given by Greeley in the New Yorker. “If any young man is about to commence the world, we say to him, publicly and privately, Go to the West”
51. Lindsay who played Liz in "Liz & Dick": LOHAN
54. Wedding promises: I DO's
55. Mature eft: NEWT
56. Relaxed way to sit by: IDLY
58. O'Hare, for United Airlines: HUB. Chicago O'Hare Airport (ORD)
59. "__ been thinking ... ": I'VE. but not much.
60. Org. promoting hunter safety: NRA. (National Rifle Association)