Make sure you pull the dead stuff off - that is, of course, if they're dried flowers. If you follow feng shui decorating practices, make sure you keep the energy fresh and the meaning special - don't let the dried plant simply become a dust collector/clutter.
Have a less-than-ideal view? Use the plants as a living wall. They're much better than keeping the blinds down or the curtains closed.
Lucky enough to have a window like this in your washroom? Block your sexy silhouette from the snoopy neighbours by hanging a plant in front of the window.
Ferns love the humidity from the shower; if your window is facing east, even better!
Are indoor plants not your thing? Bring the outside in with a glass wall.
Strangely enough, plants love fluorescent light. Keep a little light above the plant in the evening to give it extra oomph in the dark winter months.