1: On-line discussion

5: Far from faithful

10: Till the ground

14: Plumb crazy

15: Mob actions

16: Pat response

17: In the thick of

18: Grain fungus

19: Chemical group derived from benzene

20: Intrusive

22: Actual wording

23: Bio class setting

24: Colombian coin

26: Star of 'M*A*S*H'

31: 'Praying' insect

35: Pig's digs

36: Heads with lists

38: About

39: English poet Alexander

41: Newshawk's triumph

43: Salon creation

44: Makes level

46: Big blow

48: Capital of Phoenix?

49: Empty ___

51: Diamond thieves?

53: Course climax

55: Chart shape

56: Sunrise

59: Maritime skill

65: Got grounded?

66: Exonerate

67: Buckwheat noodles of Japan

68: Unresisting

69: Place to call home

70: Sesame starter?

71: Ancient Egyptian emblems

72: Freeway divisions

73: Barber's call

1: Mum one

2: Where the heart is, proverbially

3: LSD, informally

4: Move uncertainly

5: They're on the house

6: Ditties

7: Merrill Lynch's bull, e.g.

8: Percussive off-Broadway hit

9: Admire, and then some

10: Like some friends

11: Old Italian money

12: Figurine mineral

13: Lash mark

21: Piecrust ingredient

25: Pouch in the body

26: Colorado ski resort

27: Potbelly, for one

28: Varieties

29: Cul-de-___ (dead end roads)

30: Seagoing speed units

32: Figure of speech

33: Less friendly

34: Places for valuables

37: Chimney sweep's target

40: International accords

42: Gears up

45: Birth certificate notation

47: Cardinal

50: Mischievous one

52: Pupil's reading

54: Peach ___

56: Statistics

57: Word of woe

58: Milquetoast

60: Many millennia

61: Assured of success

62: Anticipatory feeling

63: Alpine climber

64: Puff like a pooped pup