I heard some advertisements on the ME2 Citadel today that I'd never heard before. I hadn't realized that they could be clicked on additional times to get new adverts.
I imagine many people are in the same boat. I know I didn't realize you could click on prompts multiple times and get different dialogue for quite a long time. So as a service to those who may have missed out on various dialogue cycles I offer the following videos of dialogue cycles on Omega and the Citadel. (I have also gathered these together into a playlist. For a comprehensive look at dialogue on Zakera Ward, including all but one of the advertising pillars, you can check out this video. Warning: it is an hour long tour of Zakera Ward.)
The Batarian Preacher on Omega. (mass effect 2 version)
Patriarch's ambient dialogue.
The Volus ship salesman. (note: for a male Shepard, the Volus will substitute the word "virile" for "fertile.")
All lines from Kasumi's "advertisement" when you don't click on it right away.
The "life-span talk" between an Asari and a Turian.
All lines about fish on the Presidium from the Krogan.
All lines from Rebekah and Michael in Mass Effect 2.
The "refund guy" in Mass Effect 2. (note: I may go through my vids and update this to include his lines from Mass Effect 1 & 3)
All lines from the Tupari drink machine. Remember: Paragade is for losers!