We've seen an homage to Owen and Beru Lars, now reader Zack F. has found Deckard's gun in Blade Runner - called "That Gun" in-game - in Fallout: New Vegas. The sidearm has a street value of 900 caps.
Zack says he picked it up in Novac. Here's an alternate view; Zack dropped it so we could see its name and cap value.
Edit: I've been advised by reader Marcus that it's called "That Gun" because that was the name of the Lone Wanderer's weapon in Fallout and in Fallout 2. Which was an homage to Deckard's weapon. Either way, still cool.