Computer crashes are probably the most devastating event of a person's technological life. Not to mention one of the most expensive. So how many times do I gotta tell ya? Back up that data! It's easy to do, and once you do it, you'll not only have peace of mind but will have all of your photos, music, and personal documents safely out of your computer in case of any crazy power surge or (knock on wood) worse. Check out three easy ways to back up your most important data in this slideshow.