I agree "2-D Blacktop" was a bit lame and the 2-D world wasn't as interesting as I had hoped it would be. However, I did love the Doctor Who
reference (The Professor called the Planet Express ship "Bessie").
"Fry and Leela's Big Fling" was indeed a lot better with two fun stories that converged in an amusing way, albeit predictably even without the synopsis spoiling the twist. Much to my surprise, I actually enjoyed Gunther's return (as well as Dr. Banjoy's), although it's too bad Gunther and Fry didn't face off (and Fry's sudden mention of Gunther at the right time was a little forced). The Planet of the Simians was full of great gags and I loved the trip to the zoo. Seeing The Bone Vampires ("Fry Am the Egg Man") and the Cylclophage ("Rebirth") again was pretty cool and their appearance reminded me of one of my childhood favorite books, Mercer Mayer's Professor Wormbog in Search for the Zipperump-a-Zooa
. Additionally, it was good to see the Fry and Leela relationship get some good attention and even the sudden appearance of Sean the never-before-seen ex-boyfriend worked rather well.