At one point Batman tells Cash that he is going out to find Jim Gordon and Cash exclaims "He's alive!" in a voice to close to Brian Blessed's for it to be a coincidence. It almost broke my brain, that game is so dark and horrible at some points and then they put in a Flash Gordon reference.

Here are some of my favorites:

-In the scene from "Breaker of Chains" (Game of Thrones season 4) where the Meereeneese champion challenges Daenerys, one of his lines is apparently a Low Valyrian translation of a certain immortal Monty Python line. I'm not sure if this is in A Feast for Crows, too, but now I want to reread it and find out. :)

-Speaking of Game of Thrones, there's a subtle reference to it in Pokemon Gold/Silver/Crystal/HeartGold/SoulSilver; a trainer on Route 42 is called Fisherman Tully.
--Other good ones from the Pokemon series include the Hiker in Rock Tunnel who literally says "Hit me with your best shot" before battle (and "Fired away!" when he loses) and Silver quoting Ledger!Joker in HGSS.

-Listen to K.K. Adventure in Animal Crossing. Then listen to the Pirates of the Caribbean theme.
--K.K. Island is also a remix of the island theme from the Gamecube game, and Rockin' K.K. is based on the Hippie battle theme from EarthBound and/or Chuck Berry's "Johnny B. Goode".
--Quillson the duck villager is probably based on Brian Wilson of the Beach Boys.

In Diane Duane's High Wizardry, one of the characters is suddenly helped out by a stranger described thusly:

"So rattled was she that though she stared right at the person who was steadying her, it took her precious seconds to see him. He was built slight and strong, wearing a white shirt and sweater and a long fawn-colored jacket; a fair-haired young man with quick bright eyes and an intelligent face."

He's also telepathically sensitive, friendly towards strangers, and very familiar with being chased by angry aliens.

In fact, he is very much (exactly) like this guy:

Because that's not gonna get awkward at all...

hS