We almost thought that the NY Post website was offering a game of "Which one of these things is not like the other?" But it turns out that celebrities Christina Aguilera, Nicole Richie, Courtney Thorne-Smith and David Alan Grier all had babies. The four babies - two boys (from Aguilera and Thorne-Smith) and two girls (Richie's and Grier's) - were born at Los Angeles' Cedars-Sinai, the hospital where Britney Spears was recently hospitalized and......