The trailer, which features Christopher Lloyd (as Doc Brown) getting a strange glowing box delivered to his home. His sense of wonder at seeing the little minifig of himself and all the things he can do in the game is a nice bit of awesome for BTTF fans.
Made even more awesome by the fact that you can see the Delorean under a tarpaulin, making it clear this IS Doctor Emmett Lathrop Brown, in the present day.
During the main story, when DC Batman drops in on Gandalf while he's fighting the Balrog, after some questions (while their falling) Batman simply grapples the two back up to the bridge to safety.
Wicked Witch: All of Oz is mine! So long, Dorothy! So long! (laughs wickedly)
And then the heroes work together to break the Witch's crystal ball, and rebuild it into a water cannon, which they can hose the Witch with. Bonus points if it's Batman doing this, given his normal aversion to killing.
When Batman, Wyldstyle and Gandalf meet The Doctor for the first time (for them).
Never mind the Sauron fight, what about the battle preceding that with Two-Face? He's riding a Mumak, brainwashed and outfitted with some mounted guns, and the heroes use the Elemental Keystones to blow the howdah off the massive elephant and send Two-Face falling through a portal back to Lord Vortech.
Gandalf's Kirk Summation to Sauron is equally awesome, and one of the few times we see him act more like his canonical self:
Gandalf: You've fallen far, "Lord" Sauron. Serving another now, are you? Sauron: I serve no-one, Gandalf Stormcrow. All serve me. [after the boss battle] Sauron: How...is this possible?! Gandalf: This is not your domain. You have no power here, Sauron the Deceiver!
In the Ninjago adventure world, the Skullkin / Skeleton Army are Nigh-Invulnerable; Upset about his involvement with them in the past, Lord Garmadon is trying to clean up their ranks by shoving them into a portal to The Underworld. Enter the party. Now, the easiest way is to knock them into the catapult that goes to the portal, but if they beat one up enough (which is harder then it seems), a button prompt will appear above it. Using it makes the Skullkin willingly enter the portal, just to stop you from blowing them up continuously.
The fight with GLaDOS, including a section where you distract her by using the Locate keystone to summon HAL 9000,of all things.
The boss fight with General Zod, especially once you free the Ghostbusters.
Stanz: You okay?
Egon: I'm all right.
Stanz: You all right?
Zeddemore: I'm alright. You all right?
Stanz: Yeah. You okay?
Venkman: Fine. THROW IT!
[The Ghostbusters theme begins playing as all four of them hold Zod's ghosts in place with their Proton Packs]
The team manages to get GLaDOs on their side by quickly reinstalling her morality core. And she gets a new credits song!
(Batman hurls his Batarang at the piece of Vortech, and causes it to collapse in on itself like a black hole!)
The final battle with Lord Vortech. If you play your cards right, you can have inhabitants of all of the dimensions take part in it!
By that, you can place a character from DC Comics, the LEGO Movie, the Lord of the Rings, the Simpsons, Ninjago, Chima, and Jurassic World onto the toy pad. The game itself has Portal, Doctor Who, Scooby Doo, Back to the Future, Ghostbusters, and Midway Arcade characters(and Bane) take part in the battle. So where, you may ask, do Wizard of Oz inhabitants come in? One of the drop pods sends out flying monkeys.
At the climax of the boss fight against the Stay Puft Marshmallow Man, the Ghostbusters theme starts playing, and it feels awesome!
In the final section of the level All Your Bricks Are Belong To Us, you face off against the Gauntlet Thief in a corrupted version of Robotron 2084.
Gandalf: So... what now?
(several robots materialize around the trio)
Batman: (puts fists up) THIS.
One of the locations that can be visited in the Harry Potter World is the Potter Memorial Statue, which in-universe is enchanted to shapeshift depending on if a Muggle or Wizard looks upon it. Those with magical blood can see the statue's true form while Muggles see an obelisk. This functionality carries over to the game, where the statue shapeshifts into an obelisk if a character like Homer approaches it. The statue naturally reveals it's true form if the player is controlling Harry or Voldemort, but besides those two Gandalf and the Wicked Witch can also see the statue's true form, as they're both magic users. Shows how much detail the dev team put in.
In the Ghostbusters (2016) stage, players have to face off against possessed parade balloons of the Ice King and Dr. Eggman. To make Eggman's battle even more incredible, they play his theme from Sonic Adventure, you end up fighting ghost Buzzbombers and you're forced to build, inflate and possess a Sonic balloon to help defeat the mad scientist balloon.
The Sonic the Hedgehog level pack ends with a boss battle against a super-sized Chaos 0, with the power to shift from water to other elements. You can barely damage him for most of the fight, but after a few waves, Amy (who has been mysteriously absent for most of the pack) suddenly arrives and tosses Sonic the last Chaos Emerald. Sonic goes Super, "Open Your Heart" kicks in, and it's on.
The whole Sonic in pack, in fact. A few problematic choices and cringeworthy lines aside, it has managed to do the impossible and unify the vast majority of the Sonic fanbase on its quality - that being it's really good. It's almost fitting, seeing that Traveller's Tales' history with Sonic has been...spotty, to put it lightly (they made Sonic R, after all). With this, many agree they have atoned for the sins of the past.
Whether intentional or not, if the player activates Super Sonic while they have an invincibility power-up active, Super Sonic will flash different colors as a carry-over from the invincibility power-up, an effect that will continue until the Super Sonic form expires, making this the first appearance of Hyper Sonic since Sonic 3 & Knuckles.
The E.T. Adventure World has a ramp that can send the player flying across the moon in slow-motion, re-enacting one of the movie's most iconic moments.
In the original LEGO City Undercover game, the game’s true villain, billionaire Forrest Blackwell, was never caught despite planning to destroy LEGO City. In this game, however, his luck has run out. You can find and defeat him in the LEGO City world, and he is promptly arrested upon his defeat.
The penultimate section of The Goonies Level: Playing as Sloth, Captain Chunk, and Data, you rescue the remaining members of the Goonies from the Fratellis while fighting the latter. It's even better if the Goonies were your childhood heroes.
The fact that The Goonies Level includes a boss battle with the gigantic octopus that never made it into the finished film. There's dedication for you.
The Teen Titans Go! episode has the Titans use the vehicles and gadgets included with their Packs to save Jump City from Betelgeuse piloting Raven's gargoyle: Starfire's Titan Bot shoots the enemy in the face, Beast Boy flies the T-Plane in order to rescue his captive teammates, and Raven finishes off the enemy with some magic from the Spellbook of Azarath.
