Puzzle

 ACROSS

  1 The Jetsons' dog

  6 Basics of a topic

 10 POTUS who tried to change the day of Thanksgiving

 13 "Airplane!" actor Bridges

 14 Real-life award featured in "Mad Men"

 15 Days of ___

 16 Queued (up)

 17 Prefix for "complete" or "correct"

 18 SpaceX's Musk

 19 Like some stares

 20 Martini garnish (mix the colors in 7- and 15-Down)

 22 Prohibition-era beverage

 25 Soothing plant

 26 A billion years

 27 101 course

 30 Color, as a '60s T-shirt

 33 See 39-Across

 34 Collision sound

 38 Curves

 39 One who walks into a 33-Across, in some jokes

 41 Daring

 42 Gas in many lights

 43 "Long, long ___ ..."

 44 Pancakes in Paris, perhaps

 46 ___ wrench

 48 Kenan's partner

 49 Mafia chief

 51 Word after "office" or "playing"

 56 1967 hit whose title is sung before "all in my brain" (... 7- and 23-Down)

 59 "The Raven" writer

 60 Up to it

 61 Funny Jay

 62 What cliff faces gradually do

 64 A couple of bucks, say?

 65 Visible

 66 ___ one's time (waited)

 67 Sensitive ID

 68 Palindromic fashion magazine

 69 Overly controlling

DOWN

  1 Fully committed

  2 Piece of the pie

  3 Harding portrayed by Margot Robbie

  4 Dark bread grain

  5 Like 1 or 101

  6 Not ___ in the world

  7 Government-appointed group of experts

  8 Refer to

  9 Imminently

 10 Leaf of a book

 11 Impelled

 12 Descartes or Russo

 15 Early karate level

 20 Far from specific

 21 Crew tool

 23 Food fish in the Gulf of Mexico

 24 End of some birth announcements

 28 Capture

 29 Flow slowly

 30 Get some sun

 31 Anger

 32 Environmental prefix

 35 Use a pogo stick

 36 Certain microbrew

 37 Physicians, briefly

 40 12, say, for a tween

 45 Store for the outdoorsy

 47 Not quite ROFL

 49 Lumps of sugar or ice

 50 "King of the Hill" town

 52 Layer with a hole

 53 Apple products since 2001

 54 Ciphers

 55 Run-down

 56 Skateboarders' protections

 57 "Can I get you anything ___?"

 58 Dog walker's command

 62 Wane

 63 Brazilian metropolis, slangily

Puzzle