Imitating Sarah is her only claim to fame!
Hardly,
Tina Fey has received seven Emmy Awards, three Golden Globe Awards, three Screen Actors Guild Awards, and four Writers Guild of America Awards.
She was singled out as the performer who had the greatest impact on culture and entertainment in 2008 by the Associated Press, who gave her their AP Entertainer of the Year award.
30 Rock is an American television comedy series created by Tina Fey that airs on NBC. On July 14, 2009, the series was nominated for 22 Emmy Awards, the most in a single year for a comedy series