Gainax has a way with endings in their anime. The series are either disappointing (
Gurren Laggan), completely mind-boggling (
Neon Genesis Evangelion,
FLCL), out of left-field (
Mahoromatic), or don't have one at all (
His and Hers Circumstances--the series is only 26 episodes long, but the way it ends makes it seem like there's going to be more episodes

).
Speaking of Gainax, the last anime I saw was the first four episodes of
Mahoromatic. You know...I'm still a little embarrassed to admit that I not only watch this anime, but like it. It's pretty good overall but...it's full of ridiculous amount of fan service, breast size jokes, and frontal female nudity. And there's Miss Shikijo, main character Suguru Misato teacher with an extreme shota complex who wants to show him "the world of adults." *Shivers* I'd be embarrassed to go to the same school she teaches at... Like I said, it actually is good, but it's hard for me to recommend to anyone, so I never do.
Episode 2 also has to have what I consider to be the single-biggest WTF moment in anime history. I'd also put it at number 1 of a top ten list of "Big-Lipped Alligator Moments in Anime" if I ever got around to making it. In the episode, Mahoro falls asleep. When Suguru looks up from the book he is reading, he sees a yellow fluffy chick somehow emerge from her head. He thinks he's hallucinating, looks back at his book, then looks at Mahoro again. This time there are three chicks flying around her head. Then the chicks notice him. Suddenly thousands of them appear, fly at him, and bury him. Some time later Mahoro wakes him up, saying that he shouldn't fall asleep on the floor. Suguru is confused, but
never speaks of it again. Well, the chicks DO make an appearance in the second season,
Mahoromatic 2: Something More Beautiful, but it's a brief appearance and no explanation is ever given as to what the heck they are or why they someties appear when Mahoro falls asleep.