The prairie dog at the beginning of the Indiana Jones 4 video quotes two Star Wars characters: Jar Jar Binks, and a Jawa.
One of the human explorers in Avatar references another movie James Cameron directed when he exclaims, "Game over, man! Game over!" Selfridge also echoes Ripley's line that they "should nuke the site from orbit. It's the only way to be sure."
Recursively, the crew in Aliens references Avatar when they joke about finding Unobtanium.
Davy Jones of The Monkees shows up at the end of Dead Man's Chest to tell their Davy Jones, "I believe you have my locker."
During a confrontation with Han Solo at the end of The Empire Strikes Back, Darth Vader admits he felt surprised when Han shot first, although Han doesn't see any reason to feel that way.
Frank Lapidus' heroic piloting of the helicopter provides long-awaited rescue to the characters trapped on a hazardous Island... the Jurassic Park one.