Apple had a busy 10 years--these moves were the company's most importantThe end of one year and the beginning of another usually lends itself to list making. That goes double when the second-to-last digit in a calendar year flips over to a new number. That's when every writer worth his or her salt breaks out a pad of paper, an almanac, and a top 10 list to signify the most important, most memorable, or best things of a particular decade.