Okay, Natsu beat on Erza from behind when they were naked. Granted, I knew he was going to do something to screw it up, but man!
Also, every now and again, an anime or manga will have a hot-spring chapter. It's usually a fun experience to see characters you love or hate in a different situation.
Fairy Tail lives in the bath. Almost entire chapters are naked. Believe it or not, however idealistic and quite possibly childish, the story and plot may be. I like the characters and their adventures. This hot-spring trip brought two little tid-bits of information to the table. Tree guy tells everyone he is/was a member of fairy tail, and that tartaros apparently worship demons. But do they worship demons naked? I wonder...