Also, if you have a sump pump, I would suggest a battery backup system. It is pretty cheap insurance if you would loose power during a rain storm.
If you're finishing your basement you may also have a sewage pit to consider if you have anything other than your bathroom flowing into it (which you can generally avoid using during an outage)
Also, there are battery-free sump back-ups out there that work off water pressure from your water supply. Holy cow does that save a lot of time and money if you have to replace any parts of the battery backup (and the batteries need to be replaced every 2 years or so).
http://www.zoellerpumps.com/ProductBenefit.aspx?ProductID=65