This isn't on my review list but it has an interesting place in anime history.

Kazuto is an average kid until a close encounter with an alien leads him to Narue, a cute girl with her own alien heritage. This encounter ends with them becoming a couple but Kazuto will find that said alien heritage of Narue will come at him in many forms testing his love for Narue.
Now the interesting bit, over a decade ago this was the worst rated anime on Anime News Network, today much worst anime has come and gone with World of Narue no longer on the list. So is that title deserved?
The worst I can really say about this anime is that it's bare bones basic but I'll break it down.
Characters: really generic but at the very least there is character development and it at least made certain characters better later but far from groundbreaking.
World: It has the same problem as Onegai Teacher, it forgets how to Sci-Fi but while that show can back up it's romance with mature subjects, Narue is bland in comparison.
Animation: Forgettable, doesn't do anything that makes it stand out, it has the early 00s problem of the colour palette feeling bleached with only Bathyscaphe standing out among the cast who should be in Tenchi Muyo.
Plot: The fact that Narue is an alien gets forgotten very quickly and they tend to over complicate the plot with weird sub plots like Narue's older sister being younger than her or whatever the hell the android girl was trying to accomplish by mind controlling everyone.
Dub: I cannot un-hear the Pokemon cast but they do a good job despite some really bland dialogue.
So to sum up, characters are fine and they at least have development, the world doesn't know how to Sci-fi but it's romance is too bland to compensate, the animation is forgettable bar a couple of characters inspired by Tenchi Muyo, the plot makes you forget Narue is an alien with subplots that create more questions than answers and finally the dubbing feels very 4Kids Pokemon era, not surprising given that the voice talent consists of Ash, Misty, Jessie and Gary Oak.
So is it the worst? No, not even close, it's biggest offense is being too generic.
Final Verdict: it's just a bland forgettable series that doesn't do much with it's alien theme but it's far from being the worst anime.