Easter eggs (Origins)

There are a several Easter eggs in Dragon Age: Origins.

Baldur's Gate References

 * When transitioning from one location to a next, a window will appear and ask if you wish to, "Gather your party and venture forth?" This is an obvious reference to Baldur's Gate I and II, when your player character attempted to leave an area without their companions.
 * A loading screen tip reads, "When all else fails, go for the eyes!" This is a reference to the famous Baldur's Gate characters, Minsc and Boo.
 * When you get Dog to dig for treasure in the area where you first meet him (assuming you are not a Human Noble) he fill find a pair of old pantaloons that could have once been silver or gold. This is a reference to the golden, silver, and bronze pantaloons that could be collected in Baldur's Gate 1, Baldur's Gate 2, and Baldur's Gate: The Throne of Bhaal, respectively.
 * In one of the Denerim taverns, there is a red robed woman named Edwina. This is a reference to Baldur's gate 2's Edwin, and his rather unfortunate "transformation".

Mass Effect References

 * A character named Sarel at the Dalish Camp will recite a poem for you if you ask about the history of the Dalish Elves. This is a reference to Mass Effect's companion, Ashley, who was also voiced by Kimberly Brooks and had a penchant for reciting poetry.
 * In one of the game's Codex entries there is a reference to BioWare game Mass Effect and its slow elevator rides.

Miscellaneous

 * During a Random Encounter, an old human couple, one male, one female, can be seen, and a smoldering crater can be seen. The male human says "It's a boy, Martha! Ten fingers, ten toes! The maker's answered our prayers!" This is obviously a superman easter egg.
 * At the waterside in Redcliffe there is a sign saying "No Swimming". This may be a reference to the request that some players made for the game to feature swimming.
 * Sometimes if you're using the "experienced" voice set, your character will remark "Warden sense tingling" when he spots enemies. This is a reference to spiderman's spider sense.