Pre-flight stuff/people with post-crash stuff/people.

So here's what I remember:

Sawyer got drunk with Jack's dad.
Hurly won the lottery with the island broadcasted numbers.
Jack ran with the bunker dude.
Hurly owns Locke's box company.
Jack's fiance killed Shannon's father in car accident.

These are way too random to not be important and I'm sure I'm forgetting some. Add to the list.