puzzle

 ACROSS

  1 Trash bag brand

  5 ___ rally

  8 "Peace," at a shul

 14 Greek I

 15 Ore-___ (Tater Tots brand)

 16 Gets stuck (in)

 17 *With 61-Across, wakeful hours, or where the last words in the starred clues' answers will take you

 19 *"Oh, fiddlesticks!"

 20 Drum prominently heard in "2001: A Space Odyssey"

 21 Lead-in to "historic"

 22 *"Better not even think about it ..."

 28 Number of HRs, say

 32 Practically forever

 33 ___ de plume

 34 Have a sudden change in quality

 38 Molten rock

 40 *He played Dr. Sloan in "Grey's Anatomy"

 41 Int'l org. in NYC

 42 Looking after with affection

 44 Country house

 45 "Don't leave yet!"

 46 Salary ceiling

 48 Muesli grain

 49 *Sci-fi anthology set in Frank Herbert's universe

 54 Posh

 58 Joey in a Milne book

 59 *Dramatic two-pointer

 61 *See 17-Across

 65 ___ stick (bouncy toy)

 66 "Mamma ___!"

 67 "Same here"

 68 Duration

 69 TV show that often goes viral on Sundays

 70 Quantify, perhaps


DOWN

  1 White elephant item

  2 Petty of "Tank Girl"

  3 It might be ionized

  4 Like many old cellars

  5 Dueling ___ bar

  6 Mets pitcher Diaz

  7 Look for gold in a river

  8 Apply haphazardly

  9 Texter's "wuzup"

 10 Threw in

 11 Touchdown spot in NYC

 12 "___ the ramparts we watched ..."

 13 Windows-related portal

 18 Papa

 23 Timothy Leary of the '90s"

 24 Thataway

 25 "And Still I Rise" poet Maya

 26 Vulcan-related "Star Trek" race

 27 Issue (from)

 28 Parts of goblets

 29 Deck at a reading

 30 Large dog from Japan

 31 Computer geek

 35 Summery drink suffix

 36 Part of the pavement

 37 Worker's outfit, slangily

 38 "Ridiculousness" network

 39 Poke bowl tuna

 43 Its price is measured in tenths of cents

 47 Ellen's wife

 49 Skosh

 50 Homecoming attendees

 51 He wrote "The State and Revolution" in 1917

 52 Groceries

 53 Extinct birds

 54 Agcy. that delivers

 55 Alka-Seltzer sound

 56 It's a long story

 57 "Andale!"

 60 Actor Penn of "House"

 62 Sport-___

 63 Big letters on an island beach, maybe

 64 Some MMA wins

solution