-Ahem- Turning the topic back to humor...
One thing that made DD quirky and fun was that it was 'conscious' of itself as a game, that is, it didn't take itself so seriously all the time. The easter egg area was the big example of this; another secret, hard-to-get-to area in ED would be fun.
I always like having speech options that are sarcastic, mocking, or otherwise comical. They're almost never the 'best' dialogue option (since characters will often get upset) but sometimes they're so humorous I have to select them to see what happens. I just like the option of having a character who takes nothing or no one seriously.
Ex. To Lanilor the frozen elf: "I don't know...in a few more minutes you'll make a pretty nice ice sculpture."