Lost Season 5 Episode 10

Numbers:
-When Sayid leaves the Moscow building, the reverse writing above the door reads "Oldham 32 Pharmaceuticals", not russian but an english words, just written in cyrillic letters. 32 reversed is 23.
-The license plate of the car in front of which Ben waits for Sayid is "E 608 PC 158".
-Young Ben told Sayid that he first met Richard 4 years ago.
-Sawyer reports on the walkie-talkie that Building 15 is on fire after the flaming DHARMA van plows into it.

Before Sawyer goes into Sayid's cell the first time, an Apple Lisa can be seen behind Phil. This computer would not be on the market for another 6 years.

During the DHARMA meeting about Sayid, they mentioned Ann Arbor. That city is home to the University of Michigan, the same college that DHARMA founders Karen and Gerald DeGroot work at. Also, Pierre Chang was the professor of theoretical astrophysics from Ann Arbor, Michigan.

Next when Jack approached Hurley, Sayid saw Kate sitting in a chair before standing up and go, however, in "316", Kate passed through to the terminal gate long before that.

When Sayid looks at Hurley at the airport, the female ticketing agent that Hurley debated with is obviously not Nalini who was seen in "316".

The small CCTV camera we saw in the cell holding Sayid was a modern CCD camera. The only CCD cameras available in the 70s looked more like... 70s video cameras: large and metallic.

A prayer flag can be seen at Oldham's camp. On such a flag, each color represents a different element (sky, air, fire, water, earth), and those colors are arranged in very specific patterns. Tibetans believe the prayers and mantras will be blown by the wind to spread the good will and compassion into all pervading space. Therefore, prayer flags are thought to bring benefit to all.

Sayid orders MacCutcheon whiskey, the same mentioned previously in the series.

The food pyramid seen on the wall of the cafeteria was not created until 1992.

This is the very first time in the whole series, that we see any reference to Sayid's family.

When Sayid shoots the Russian in the beginning of the episode, it is daylight out. When he goes outside the door (beaming with sunlight) to meet Ben, it is instantly nighttime.

After Ben is shot by Sayid, his body goes from being sprawled out, to a more push-up position, to being sprawled out again between shots.

The scene in this episode, where Sun holds a gun to Ben's face is slightly different than in episode 5 "This Place Is Death". Kate's fight with Jack can't be heard and after Sayid turns around he says: "If I see you (pointing at Ben) again, it'll be extremely unpleasant for us both", whereas in episode 5 he says: "If I see you (pointing at Jack) or him (Ben) again, it'll be extremely unpleasant for all of us."

Sawyer uses a hand-held TASER to stun Sayid but the year is 1977 and the touch kind of TASERs that used compressed air instead of gunpowder were not invented until 1994.