Dual Singularities

Be wary of the creative physics in this part of Zyzzlvaria; you may not end up where you expect.

ACROSS

1. The Metamorphosis author's first name... / ...and his last name

6. Intro to physics? / "Life In Hell" character

11. Ball counterpart / Heights of dispute

16. Dude who's totally pathetic / ___ ease

17. Brace (oneself) / Talk to Marcel Marceau?

18. Benjamin / Zesty sauce

19. Cottonwood relative / Dead meat

20. Cavity Sam's stomach / They've got eagles on them

22. Girl who hasn't come out yet / It has a Biotechnology Index

24. Like Mr. White from The Venture Brothers / Peruse again

25. Lids purchase / Treasury Dept. bureau

26. Some champagnes / X-rated

28. Part of NRA / Steve's partner

30. Bring on / First firstborn

33. Delight in / "...lest you face the consequences!"

35. Aleve alternative / Deschanel series

39. Big Blue / ___ corda

40. Brain check? / Defeat decisively

41. All there / TV show with six recurring numbers

42. Flatfoot / Sandwich name that originated as diner slang

43. Eliminated from Project Runway / Raincoat

44. Drops in the morning / T-shirt size

46. Babylonian base / Inclinations

47. 2007 Radiohead track / Whence "You'll Never Walk Alone"

50. Maya Rudolph's voice role in Shrek the Third / Reveals

52. Contacts by phone / Diminish

53. Disencumber / Uncle known for pointing

55. Holiday beverage / Pre-school?

56. It's unrefined / Wall-E's beloved

57. Conformity tester Solomon / Johnnycake

58. Clogs / Eye holder

60. It's full of eau / Old Etonian ingredient

61. Bundle of grain / Mlles, across the Pyrenees

63. Ludlum creation / Find (out)

64. Bits of resistance / Haagen-___

65. Cardassian government head after Dukat / One paying attention

67. Country rocker Steve / Shape for a church dome

69. Amendment XVIII opponent / For

72. Shabbos goy, e.g. / Tiptoeing venue?

74. Opposite of "lest" / Really not built to last

78. Artistic medium filled with aluminum / Movie featuring Gary Oldman as a hijacker

81. Speak from a soapbox / Tribe of Israel

82. 2006 Best Picture nominee / Conseco Fieldhouse athlete

83. Cause for a sigh / He's got the whole world in his hands

84. Frankincense or myrrh, for example / Lynch mob, perhaps

85. Funny Girl songwriter / Shopping center

86. Condition / Self-titled album beginning with an asterisk

87. Catches sight of / Prelude to "Gesundheit"

DOWN

1. Another name for a Browncoat / Creatures in the "St. Ives" riddle

2. Common All-Star surname / Tabula ___

3. Roadies' loads / Spare tire

4. Are necessarily / Director who co-wrote Return of the Jedi

5. Floral oil / Spaced (out)

6. PD communication / Substance found in some trays

7. Operation Wunderland locale / Take by surprise

8. Prefix with cast or gram / Songwriter Jacques

9. Checked a page for updates / Color mentioned in "America the Beautiful"

10. Getting on a bit / Night flight

11. It was part of New France / Micro Machines creators

12. IV hooker-uppers / Novel that inspired There Will Be Blood

13. The Squid and the Whale director Baumbach / Trickster god

14. It was the first of its kind to have a pivoting head / Oriole, e.g.

15. Comic strip featuring Jeremy Duncan / Hotbed

21. Clip-___ (ties for losers) / Song that inspired "Weird Al" Yankovic's "Fat"

23. Tu ___ (logical fallacy) / Very very unrevealing women's garments

27. Cease-fires / Jock's pride

29. Automotive disaster / Firth or Farrell

30. Brood X members / Items often stolen by teens

31. Close to motherhood / Do away with

32. Daily grind / It may cause one to need a bigger cup

34. It'll take you on a trip / Something Ferris Bueller does not condone

36. Painter with an eponymous museum in Amsterdam / Skin care brand

37. Brat Packer / Meantime

38. Diminishes / Hairdressers, e.g.

40. Radio host fired in 2007 / Unit of loudness

45. Shade / Shoplifter Ryder

46. Gets to / Haggis ingredient

48. Ingredient in Fat Free Pringles / "___ to Be You"

49. Befuddle / Some HP printers

51. Constituency / Flowery, in a way

54. "How ___ Want It" (2Pac song) / Scratch

59. "SOS" singer last summer / Ultrashort do

62. Badenov's partner / State bordering Arizona

63. Competes with a sabre / From southeast Europe

64. "Just a moment!" / Excessive

66. 3000 to a Roman to a Greek? / Rocky outcrop

68. Butler's love / Some samples

69. Fly traps / "Joe ___" (Elegies song)

70. Coup d'___ / Irani money

71. Pinkberry alternative / Shamu, e.g.

73. Participating in multiple relationships / Volcano near Messina

75. Diner staple / Mr. Moto catchphrase

76. Former Spanish currency / Go ___ (fight)

77. Change for a twenty / Sandwich for dessert

79. Frustum-shaped article of clothing / Layer

80. Hop to it / Letters near F1, perhaps