50 - On a pamphlet in the Doctor's office in the first scene

49 - Same pamphlet on the Doctor's desk ("months later" according to Ted)

48 - Label on hot sauce Marshall uses at MacLaren's

47 - Barney's laser tag forms are for the "47th Bi-Annual" Laser Tag Competition

46 - Printed on Dr. Stangel's certificate behind Lily when they first meet

45 - 45¢ the price of the hot wings at MacLaren's

44 - Number of beers on tap, on a circular blackboard in MacLaren's

44 - (appears twice) Football number on a man's jersey in MacLaren's

43 - On the pamphlet Marshall is reading in Dr. Stangel's office

42 - Second side of the same pamphlet

41 - Race car poster number in Dr. Stangel's office

40 - Ted's book that "New York's 40 greatest landmarks" when Robin comes home from Day 1

39 - Number of office behind Robin

38 - On the back of Robin's co-worker's newspaper, 38° in the weather section

37 - Lily is reading a Decadence magazine with the "37 Recipes for Holiday leftovers" title on it.

36 - The number on Marshall's dad's beer, "Old Number 36", when Marshall does not call him

35,34 - Stock markets are up 35.34 points on Robin's news screen

33 - Miners rescued from collapsed mine on Robin's news screen. This is actually a true event, as 33 Chilean coal miners did really get trapped in a mine. All of them survived.

32-27 - On Robin's screen: "Today's lottery numbers are 32 31 30 29 28 27"

26 - Marshall's dad is reading "26 Home Improvement Shortcuts"

25 - Textbook that Ted is reading in the apartment, "25 Greatest Bridges"

24 - One of Robin's co-workers is reading a magazine, with a sports player on the front with "24" on his jersey

23 - Metro News 23, the channel Robin says "I'm a dirty, dirty girl," a reference to an older show.

22 - Seen in the corner of Robin's Japanese broadcast

21 - Calendar behind Dr. Stangel

20 - Masturbation room at Dr. Stangel's office

19 - "Top 19 Nekkid girls countdown" on Nekkid magazine in the room

18 - Apartment number of Marshall and Lily's apartment

17,16 - Marshall's specimen cup seen in his apartment

15 - Essential Vitamins and Minerals (not grams of fiber) in Robin's cereal

14,13 - Apartment number of Sandy's apartment

12 - The book "12 days of Christmas" behind Marshall when he's speaking with his parents in their apartment

11- On Ted's architecture book, "America's 11 greatest water towers"

10 - On Robin Sparkles left jacket arm when shown to co-workers by Robin

9 - Disguised Barney holds a folder when talking to Marshall

8 - Number on Dr. Stangel's door

7 - Number on Marshall's champagne bottle

6 - Dr. Stangel turns the folder with the 9 on it upside down

5 - Barney gives Marshall a "Motility 5"

4 - The "4 Layers of the Uterus" poster in Dr. Stangel's office

3 - "Open til 3 am sign" outside MacLaren's

2 - Clock in Marvin Sr's wood shop

1 - Number of the cab Lily arrives in

Expired - Sign on parking meter