My mom has been showering at the gym for years to avoid the low water pressure in her New York apartment.  But now she showers at home, since this showerhead has "revolutionized her bathroom."  The Oxygenics showerhead propels incoming water through an
accelerator fin to increase its velocity, then
directs it through a channel where oxygen is injected, creating a more forceful spray.  They come in a few different models and finishes, ranging from $26-60 at smarthome.com
.