Showtime is getting sketchy... sketch comedy, that is.

According to Zap2It, the network has signed Tracy Ullman for her new show, Tracy Ullman's State of the Union. The show will premiere on Sunday March 30 at 10 PM ET, right after the second season debut of The Tudors at 9 PM ET.

The series will only be a limited run of five episodes, and will feature Ullman performing as a variety of different characters about a day in the life of America. Her characters will include celebrity impersonations of Cameron Diaz, Renee Zellweger and even soccer star David Beckham.

"I have always loved Tracey Ullman ever since I was a young development executive at Fox when she was doing the original 'Tracey Ullman Show,'" says Showtime Entertainment President Robert Greenblatt. "She is a one-of-a-kind comedienne and sketch comedy performer, a true artist. We are so proud to bring her to Showtime in a completely new show that will again showcase what she does best, and in this case, she will be looking at the wide cross-section of Americans and both celebrating us and sending us up."