I guess there could still be people for whom this would be spoilers, so beware...
Anyway... I was watching episode 1 of my season 2 dvd boxset (I second that emotion) with audiocommentary and they mentioned a little secret I didn't notice before. When Fry, Leela and Bender are in the sewer with the mutants, there's a scene where you can see Leela's parents standing in the crowd. Ok to the real Futurama-freaks this is probably old news, but it was new for me. :)
So the mentioning of these "little secrets" in Futurama gave me the idea to re-watch the scene in episode 1 (of season 1) with Nibbler in the year 2000. Now they don't _really_ say something when Nibblers shadow appears, but they _do_ say: "Oh! See? Yeah. That's gonna pay off in a few years from now."
Ok, that's it. Just thought I'd post it. :) Oh and even though I only watched the first ep, the season 2 box is GREAT! :P