I love the commentaries. Not only do they give valuable insight to the series(That Guy's name is Steve Castle), but they're usually hilarious on top of it. Whenever I listen to the commentaries I understand why Futurama was such a good show; because it had such great people working on it. These guys are smart, funny people. When you listen to the commentaries you can tell they enjoyed working together and producing this show. They really cared about it.
I love the bit at the end of "Space Pilot 3000," Dueling Professors.
[Professor voice]"Ground control to major Tom!"[/Professor voice]
John Dimaggio kills me!