Top wo Nerae!

Gunbuster (Aim for the Top! Gunbuster (トップをねらえ!, Toppu o Nerae!) A six-volume OAV from 1988, directed by Hideaki Anno, that really put Studio Gainax on the map, and a series fondly remembered by old school otaku. While it's a bit of a rough diamond, viewers today can still see why it stood out then, where it led Gainax, and where Gainax took the ideas they started in it. It's also considered somewhat of a spiritual predecessor to Neon Genesis Evangelion and Tengen Toppa Gurren Lagann, as it contains a lot of elements that would later be used in those shows.

Episode 1
Noriko Takaya and Kimiko Higuchi are seen in Towels at sinks in the Shower Room after having Off Screen Showers.

Ending Credits
Noriko Takaya is seen in a Towel washing Shampoo out of her hair in a sink using a Shower Head.

Episode 2
Noriko Takaya and Kazumi Amano bathe together at the space stations Public Bath and are joined by Jung Freud who invites the two girls to her birthday party.

Episode 4
There is a Shower Room scene showing Kazumi Amano, Jung Freud and other unnamed girls in Shower Stalls. Noriko Takaya is seen exiting the shower room in a Towel implying that she had a Shower Off Screen.

Episode 5
Noriko Takaya takes a Bath.

Episode 2
Nono is scrubbed with a Mop by Lal'C Melk Mark in a Public Bath.

Episode 3
Tycho Science has an Angst Bathing scene in a Slipper Bathtub.

Episode 5
Lal'C Melk Mark has an Angst Shower scene.

Episode 6
During a Flashback, Lal'C Melk Mark takes a Bath in a Barrel with Nono.

Stripping Instrumentality Project
A crossover artbook by Gainax with Neon Genesis Evangelion.