Amy Poehler celebrates her 41st birthday today. The actress gained fame as a cast member on "Saturday Night Live" from 2001-2008 and also appeared in "Mean Girls" and "Baby Mama" with her SNL co-star Tina Fey. She currently stars as Leslie Knope on NBC's "Parks and Recreation" and has also appeared on the TV series "30 Rock" and "Napoleon Dynamite."