I totally zone out in showers (and baths too, but more so in showers). I have to put the kitchen timer on when I have a shower in the morning, otherwise I will loose track of time and be late for work.

I love soaking in a bath for ages, a habit I picked up in the land of the long soak in the bath (Japan). Drhoz introduced me to the pleasures of reading in the bath. Bubbles + book = bliss.