5. I Look to You (2009)
[youtube http://www.youtube.com/watch?v=5Pze_mdbOK8&w=560&h=315]
After being out of the spotlight for seven years, Whitney Houston returned from her hiatus with the release of her sixth (and final) studio album I Look to You in 2009. The record debuted at No. 1 on the Billboard 200, and that same year, Houston made it into the 2009 Guinness Book of World Records as the most awarded female artist of all time.