Help with two players

[Mystic_Snowfang]

So I have two players, they're good friends. But I'm not quite sure they (esp one of them) quite get the concept of them being Lawful Good. They're coming over tomorrow to level up their characters, so I want to figure out how I can put it in simple terms.
One is playing a LG Investigator (Profiler) who worships Zhols and the other is playing a Tortured Crusader Paladin of Vildeis. I'm trying to run Carrion Crown and I really don't want this thing to go off the rails.
I would like some good examples of other fictional characters they might want to model their character's behaviour after.

[ShroudedInLight]

Lawful Good

Find some examples here that might work, but since this article is YMMV you might want to hand-pick examples.

[mardaddy]

http://easydamus.com/lawfulgood.html

This is the best site I have found for examples and expanding those examples of alignments.

The following actions are honorable for this alignment:
Allowing a disarmed enemy to pick up his weapon
Allowing the enemy to attack first
Allowing the enemy to remove their dead/wounded from the field
Defeating a superior opponent
Picking up the funeral expenses of someone you slew in combat
Refusing medical treatment for the good of the party
Reporting illegal and immoral actions to the authorities
Saving the life of another at great risk to own self
Taking an arrow or hit for someone else
Taking prisoners
The following actions are dishonorable for this alignment:
Accused of crime (innocent or not)
Attacking an unarmed or obviously inferior opponent
Being taken prisoner
Convicted of a crime
Defeated by an inferior opponent
Delivering death blow to a helpless opponent
Desecrating an enemy's corpse
Dirty fighting
Falsely claiming the 'bragging rights' that belong to another or outright lying
Fleeing a battle that's obviously going poorly
Fleeing a fight with a superior opponent
Fleeing a fight with an equal opponent
Gloating over a victory
Killing a host who has provided you food or shelter
Neglecting to properly bury a member of one's own race
Paying off an extortionist or shake-down
Perpetrate humiliating prank on enemy
Rash or improper social behavior
Refusing a fair contest/challenge
Surrendering
Taking a bribe
Taunting an enemy into fighting
Treason
Unjustly slaying a prisoner or unarmed opponent who has yielded
Walking away from a challenge

[Andre Roy]

What are example of their game play that make you think that?

I've always seen Lawful as putting what's best for the collectivity first over individual rights.

And I've always seen Good as favoring/defending creatures' right.

So for me an example of LG behavior would be having a curfew in time of war/crisis to insure people safe.

Your infringing on their personal right to travel when and where they want, but it's for the good and the safety of them and of the community that this ensures is put in place.

[Mysterious Stranger]

Michael Carpenter from the Dresden files is probably the best example of paladin. He is the epitome of lawful good.