-The bachelor party happening in the bar on Ilium.
-The Krogan and his Asari girlfriend AFTER you re-unite them on Ilium near the shops and then they are on Tuchanka near the shuttle.
-Mordin's song
-EDI's and Grunt's "jokes"
-The Volus that thinks he's a biotic god during the mission to obtain Samara
-The advertisements on the Citadel:

"Shepard, you've recently been dead. Don't you deserve a fine silk burial robe?"

and the ad for the all Elcor cast of Hamlet...

Elcor: "Insincere endorsement: You have not experienced Shakespeare until you've seen it performed by Elcor."

lulz