The episode was by far the best one out of the bunch - this is where Futurama distinguishes itself from the other series. The ability to create the emotion that it does across an animated, televised medium is incredible.
The perfect mix of humor into this sad storyline ("Professor! Hot!"), I couldn't help myself but tear up at the end when Seymour is waiting and the song "I Will Wait For You" starts up.
Why not a perfect 10? Well, Bender was a little aggravating in this episode. Generally he's only aggravating to the characters in the show. Plus, it did seem as though they tried to fit this into the plot (and not as though they planned it, like the possibility of Nibbler being the one that pushed Fry into the chamber).
Regardless, it was an awesome episode and remains my favorite and I hope the new episodes coming out will be up to these standards.