Easter eggs (Inquisition)

Dragon Age: Origins

 * A ladder can be found, and "Can I get you a ladder to get off my back?" can be found scratched into it. This is what a violent Warden sometimes says when chosen or told to perform commands.
 * If you tell the soldier outside of Redcliffe that you are with the Inquisition, she will reply, "Sure, and I'm the Empress of Orlais." Similarly, when at Lake Calenhad Docks in Origins, if you tell the templar at the lake that you are a Warden, he will say, "Sure, and I'm the Queen of Antiva."

Mass Effect

 * During Promise of Destruction in the Castle of Caer Oswin, in the corridor where you meet Cassandra's apprentice, go to the eastern end of the hall, and there is a krogan head mounted on a wall.
 * In the Multiplayer Map: Orelisian Chateau there is a trophy room. Mounted above two animals on a wall is a krogan head.Krogan_head.jpg

Jade Empire

 * Cole makes several quotes referencing other media, one of which is, "He teaches them to fight with a secret flaw, part of a glorious strategy." This was said by Master Li in Jade Empire.

Plants vs. Zombies

 * There is a codex entry titled "Plants vs. Corpses", an obvious nod to the game.
 * In Crestwood, on Linden Farm, a row of giant flowers can be found against a wall, each in their own column. In several of the columns, corpses can be found on the ground.

Film and Television
===Dragon Age: Dawn of the Seeker
 * When on the Storm Coast, a dragon can be found battling a giant. If Varric and Cassandra are in the party, Varric will say, "Seeker, you're the dragon expert, what do we do?" This is potentially a reference to when Cassandra defeats a dragon in the movie.

Miscellaneous

 * At Skyhold, you can manage to fall through the floor and appear in a cavernous room with creepy music discovered under Skyhold houses. In it is what appears to be a pie in a top hat. Graham Kelly, a BioWare environment artist, calls this "The Lord of the Pies".
 * In the Western Approach, a floating, golden chalice can be found.