Theme: Cool It - Themes that end in a type of the unifier.
20A. Microprocessor : COMPUTER CHIP
39A. Substance in a visual display unit : LIQUID CRYSTAL
56A. Broth-making aid : BOUILLON CUBE. I'm having some broth now.
65D. The ends of 20-, 39- and 56-Across are forms of it : ICE
Bonus entry in the center of the grid:
30D. 65-Down, in a cocktail : ROCKS. The cube type.
Argyle 90% here. Thank you for your get well wishes last week. Typical Monday. We tend to forget that while OBI(21D) are gimmes for most of us there was a time when it was a unknown. I do like the unifier being the last word.
Across:
1. Effervescence : FIZZ. Wow! Starting out with two Z's. Unfortunately, there is no W, so no pangram.
5. Orange container : CRATE
10. Afterthoughts : ANDs
14. Mine, in Marseille : À MOI. French.
15. Where dos are done : SALON. Hair dos.
16. Chimney buildup : SOOT
17. Blessing : BOON
18. Words spoken while tossing in cards : "I'M OUT". "Too rich for my blood."
19. One may be dog-eared : PAGE. The corner is turned down.
23. Hard tattoo to misspell : MOM
26. Grafton's "__ for Burglar" : 'B' IS
27. Sunday dinners : ROASTS
28. Qatar's peninsula : ARABIA
30. Grating sound : RASP
32. Load (up), as energy food : CARB. Yes, CARB can be used as a verb.
33. Synthesizer pioneer : MOOG. Moog demonstration.(2:19)
35. Juanita's "this" : ESTÁ. Spanish.
42. Scout uniform accessory : SASH
43. Depression era migrant : OKIE
44. Graph line : AXIS
46. Snobbish mannerisms : AIRS
48. Maine mail order giant : LL BEAN
50. Halfback's maneuver : END RUN
54. __-mo replay : SLO
55. High-speed PC option : DSL. Digital Subscriber Line (DSL). High speed in comparison to Dial-Up.
60. Two-tone treat : OREO. "More cookies!"
61. Oodles : A HEAP
62. Long skirt : MAXI
66. Leave out : OMIT
67. Modern kind of phone : SMART
68. Voltaire's "with" : AVEC. French.
69. Topeka's st. : KANS
70. Versatile blood donor : TYPE 'O'
71. Green stone : JADE
Down:
1. Beatles adjective : FAB. The FAB Four.
2. Chat room "I think ..." : IMO. "In My Opinion."
3. Bronx attraction : ZOO
4. Metal in pennies : ZINC
5. Forensic TV spin-off : "CSI MIAMI"
6. Highway exits : RAMPS
7. Baseball's Felipe or Matty : ALOU. Or Jesús. Or Moisés.
8. Track tipster : TOUT
9. Goes in : ENTERS
10. Pet-protecting org. : ASPCA. American Society for the Prevention of Cruelty to Animals (ASPCA).
11. __ Ark : NOAH'S
12. Loaf on the job : DOG IT. Another meaning for DOG.
13. Staircase units : STEPS
21. Japanese wraparound : OBI
22. Double Dutch needs : ROPES. Using two jump ropes at one time. Clip.(1:12)
23. Fella : MAC
24. Postgraduate grillings : ORALS
25. What they call the wind, in a 1951 song : MARIA. Clip.(3:01) The Big song from "Paint Your Wagon" sung by Vaughn Monroe.
29. Backyard cookouts, briefly : BBQs
31. Prefix with culture : AGRI
34. Skunk's defense : ODOR
36. Take a __ at: try : STAB
37. Put a levy on : TAXED
38. Assumed name : ALIAS
40. Ryder competitor : U-HAUL
41. Shout at from below : YELL UP TO
45. NBC show with Baba Wawa skits, briefly : SNL
47. At the bottom of the standings : IN LAST
49. Soft shot : LOB
50. Kindle download : EBOOK
51. "__ Rae" : NORMA. 1979 American drama film with Sally Field, Beau Bridges, Ron Leibman, Pat Hingle.
52. Expected at the terminal : DUE IN
53. Mob outbreaks : RIOTS
54. Alarming situation : SCARE
57. "That's a surprise!" : "OH MY!"
58. Twice-monthly tide : NEAP. the tide that occurs when the difference between high and low tide is least
59. Key of Bruckner's Symphony No. 7 : E MAJ.. Anton Bruckner (1824 – 1896) was an Austrian composer.
63. Gardner on screen : AVA. Image, with Frank.
64. Crossed (out) : X'ED
Argyle