4

When he gets a flat tire, he immediately slows to 16, then 15, then 8 and 4 before the display cuts out altogether.

 

8

Sawyer said that his father shot himself, when Sawyer was 8. 

Sawyer: My daddy never got a chance to beat me. He shot himself when I was 8.

When he gets a flat tire, he immediately slows to 16, then 15, then 8 and 4 before the display cuts out altogether.

When Hurley pays the old man for his scooter, so he can get to the terminal quicker, the old man is wearing a baseball hat, and you'll never guess what it has on it...Crazy 8's Casino.

15

When he gets a flat tire, he immediately slows to 16, then 15, then 8 and 4 before the display cuts out altogether.

Hurley's check-in confirmation sheet: Flight# 815, Time: 14:15, Arrival: 10:42, Seat 20g

 

The raft was 15 miles out when they set off the flare.

Michael: We're 15 miles out. We could be here for weeks. If that battery runs out. . .

16

When he gets a flat tire, he immediately slows to 16, then 15, then 8 and 4 before the display cuts out altogether.

 

Hurley paid $1600.00 to borrow the scooter.

Old Scooter Man: I just had a hip replacement. I need this thing.
Hurley: Okay, 1600 bucks.

Charlie is hurt by one of Danielle's traps and Sayid reminds him she's been here for 16 years.

Sayid: She's been here for 16 years. She's learned how to set traps quickly. Okay, let's have a look. It's too deep. It's bleeding too much. You're going to have to go back.

23

Kate said she thought she heard Hurley say the number 23, and he asked her if that number meant something to her. She told him that her arrest reward was $23,000. 

Kate: I thought I heard 23.
Hurley: Does that mean something to you?
Kate: What?
Hurley: That number? 23?
Kate: The guy who called the Feds on me, back in Australia, did it for a 23000 dollar reward. Mean something to you?

Hurley's hotel room was 2342.

Hurley's rental car said 23 degrees celsius on the dashboard.  Equivalent to 73.4 Fahrenheit.

42

Hurley has 42km on his rental car. 

Hurley's hotel room was 2342.

 

Hurley's ticket check-in confirmation sheet indicates that flight 815 was to arrive at LA/LAX at 10:42.

All

Hurley is walking through the jungle and whispering the cursed numbers but taking a big breath where the number "8" would be...
4 - (breathe) - 15, 16, 23, 42

 

Hurley finally sees the all cursed numbers etched on the Hatch and he tries in vain to stop Jack and Locke from blowing it open.  He starts yelling that the numbers are bad. Hurley tries to stamp out the fuse to the dynamite and Jack pushes Hurley away just in time as the Hatch blows.

When Hurley is on the scooter in the airport he passes a group of girls with soccer jerseys with the numbers on them.  All are standing in order of the cursed numbers.

108

NO ENTRY

815

Hurley's check-in confirmation sheet: Flight# 815, Time: 14:15, Arrival: 10:42, Seat 20g

 

Michael tells the seabillies they were on flight 815 and crashed on the island.

Bearded Man: Plane crash, huh? How about that?
Michael: We were on an island - oh, flight 815 - hey, where are we?