Most of Ben and Abigail's conversation in the van after he steals the Declaration.
Abigail: There is not a map on the back of the Declaration of Independenceľ Ben: And there's no chance that anyone could steal this[shakes the tube containing the Declaration] either! [shakes it again]
Any time Riley says "Hello..." in that sing-songy voice.
"Sir, it's the Hudson. Nothing is visible."
The exchange between Sadusky and the ginger FBI agent Ben and Riley spoke with before the gala.
Sadusky: We got a name on the tipster?
FBI Agent: [looking more uncomfortable by the second] No file was opened.
Sadusky: And why not?
FBI Agent: We didn't find the information credible.
Sadusky: How 'bout now?
Just about anything Riley says.
Riley: (lying in the backseat, whining) When are we gonna get there? I'm hungry. This car smells weird.
His reaction at the end of the second movie when a hot brunette in glasses is interested in him. After two movies of playing the long-suffering sidekick who never gets any respect for his mad computer skills and glib remarks, here comes an attractive woman who not only knows his name, she has zero interest in Ben and wants Riley's autograph for her copy of his book, which its implied she has read cover to cover.
The deleted scene from the first movie, where Abigail and Riley run through an empty strip-club.
Riley: Well, that was disappointing.
The scene where Abigail is hiding from Shaw behind a meat counter and has this encounter with one of the woman who works behind the counter.
Woman Behind Counter: If you're not a steak you don't belong here.
Abigail: I'm sorry, I'm just trying to hide from my ex-husband.
The Friend or Idol Decision...Ben drops Abigail in order to save the Declaration of Independence. Ben starts apologizing, but Abigail reassures him: She would have done the exact same thing in Ben's position!Riley naturally lampshades this.
Riley: I would have dropped you both. Freaks.
When Ben and Dr. Chase kiss almost by accident in the tomb, Shaw enters behind them, witnesses it, and wonders aloud in a really distinct accent.
Shaw: Why does that never happen to me?
Victor: How could they build all this with hand tools? Ben: The same way they built the pyramids, and the Great Wall of China. Riley: Yeah. The aliens helped them.
The Templar Treasure scene and Riley's reaction to it.
Abigail: Riley, are you crying? Riley: Look.... Stairs.
"It's a big blueish-green man... with a strange-looking goatee. ... I'm guessing that's significant." *hugs the statue*
And in the sequel, they make a Call-Back to that joke with this: "It's a little golden man" (refering to a small idol.)
Riley: Okay. Who wants to go down the creepy tunnel inside the tomb first?
From the sequel, Riley's reaction to not being able to read the Book of Secrets cover to cover.
In the sequel when they talk about Laboulaye, Patrick said that he was a Mason and per definition, he built clues into everything, as Masons usually did. Riley asked him if he read that in his book. Patrick's expression is a very deadpan mixture of 'No' and 'You wrote a book?'.
The mean and nasty (and familiar) trick Ben plays on the group when he sticks his hand into the rock on top Mount Rushmore
(laughs) I'm sorry, I couldn't resist.
In the sequel, the scene where the President of the United States has to resort to hitchhiking.
[As a truck starts slowing down to give him a lift]
Ben: Oh, look now you've got the little bobbies down on us! You take the missus outside. I'm staying right here!
*slides down banister* WHEEE!!!
Riley's odd tastes in treasure:
Riley: Guys, look at this. (awestruck) It's a little golden man.
Ben's completely deadpan — but somehow still overacted — comment about Abigail's new love interest after he assures them that he can show them the Oval Office.
When Abigail is about to row with Connor over how many presidents sat at the Resolute Desk, and thus completely forget about the plan to find its secret they need, Ben "subletly" reminds her why they're in there to begin with.
The janitor at Trinity Church has discovered the remains of Parkington Lane's coffin in the crypt (now the furnace room) and nervously picks up a hand that fell off. Then he hears a pounding from another grave marker and looks up, scared stiff. The janitor nearly drops his flashlight when the grave marker bursts and Ben sticks his head out.