That's one plant that can look really ratty and beat-up, but yours looks beautiful. I checked the Sunset garden book, and if this is "sansevieria trifasciata," shelter from midday sun is recommended. The cactus book says it likes "summer light," so I guess you are meeting it's needs very well. Maybe the plant often looks bad because it's overwatered or in full sun all day.

I don't grow many of these, but when mine became a tangled ball of roots like this I just broke each cluster apart and let them dry out of soil for a day. Then potted them in their new home. They seem to be doing well as I find these plants impossible to kill. Sometimes they sit without water for months when I forget / ignore them and still look perfectly fine, not to mention they seem to grow like weeds. Also, you may want to check out the Sansevieria forums here on GardenWeb.

Yes, Please.

Is there a drain hole in the pot, if not you should put one in or repot into something with drainage. If it does drain, let it dry out completely before you water, use a dowel stuck into the soil to test, and then water thoroughly (until a bit of water runs out of the bottom of the pot). If it's not getting overwatered then it might just want a bit more light, maybe move it closer to the window. I used to have a couple in my office that got virtually no natural light and they grew very tall and eventually fell over. Also they might appreciate a bit of fertilizer....