I found animated version of popular bathing culture MANGA (cartoons), "Thermae Romae" with English subtitle on YouTube. Below is first episode aired in mid January this year.
Lucius, main character is an architect of Roman baths in ancient Roman Empire and accidentally time warps to present Japan. You can see how SENTO (public bath) in Japan looks like.
A movie version starring Hiroshi Abe will be released on 28 April, 2012.
Related post: Bathing Culture MANGA "THERMAE ROMAE" (Mar 30 2010)