puzzle

 ACROSS

  1 Morsel

  6 Some execs' degrees

 10 Secret language

 14 Sweetie pie

 15 Military group

 16 16, for a square of side length 4

 17 Traffic tie-up

 18 Drops from a great height?

 19 You may save or take one

 20 ABC show about an autistic surgeon

 23 Bride's words

 24 Good buddy

 25 1976 film about a Little League team

 34 Japanese noodle dish

 35 X, to Euclid

 36 Cutting-edge tool?

 37 Black-and-white sea creature

 38 Rocks in a hammock

 40 "Pretty please?"

 41 Put to work

 42 Rower's need

 43 "America's Got Talent" judge Cowell

 44 Classic transformation fairy tale

 49 Big Apple sch.

 50 "The Cask of Amontillado" writer

 51 "Gran Torino" director, and a star of the film hinted at in 20-, 25- and 44-Across

 58 Saudi Arabia neighbor

 59 Something to scratch

 60 Muppet who loves bubble baths

 62 Reading material at the table?

 63 ___ von Bismarck

 64 Freelancers' figures

 65 Longhaired lap dog, for short

 66 Source of peeps

 67 Las Vegas attractions

DOWN

  1 Loops into a conversation, briefly

  2 Tiniest puppy

  3 Jazz player's home?

  4 Swampy spot

  5 Hercule Poirot, nationality-wise

  6 Leave on an island

  7 Country star Paisley

  8 In the thick of

  9 Plot summary

 10 Where to live like a king

 11 Cookie that may be Lady Gaga-themed

 12 Cherished

 13 End a fast

 21 Roulette bet for which 21 would be a win

 22 It's hailed on a city street

 25 Sometimes-rainbow fish

 26 Severe

 27 Alex Trebek was one

 28 "Don't ___ stranger!"

 29 Online birthday message

 30 One of the five W's

 31 "Me, too!"

 32 Silklike synthetic fabric

 33 Playground favorite

 38 Liquid for contact lenses

 39 Wrong ___ (road sign)

 40 Slang for $1,000,000

 43 Shish kebab holders

 45 One-of-a-kind

 46 Ob-___ (doctor for women)

 47 Ultimate outcome

 48 Place for a sleeping soldier

 51 Ontario native

 52 Tall and thin

 53 Suffix with kitchen

 54 Makes a scene?

 55 Unwritten exam

 56 No longer deceived by

 57 Take in less takeout, say

 58 Gremlin

 61 Snaky character?

solution