JENNIFER GREY GUESTS STARS IN A NEW EPISODE OF "PHINEAS AND FERB," FRIDAY, MARCH 30 ON DISNEY CHANNEL

"Quietest Day Ever" - After Mom asks the kids to keep quiet while she prepares for her online knitting test, Phineas and Ferb create ninja outfits designed to hide the wearer from anyone who is not wearing them. Meanwhile, Candace becomes increasingly frustrated after she can't find the boys and bust them. Across town, Dr. Doofenshmirtz invents the De-Handsome-Inator, in a new episode of "Phineas and Ferb," FRIDAY, MARCH 30 (9:00-9:15 p.m., ET/PT) on Disney Channel.

"The Doonkelberry Imperative" - When Mom is out of Doonkelberries for her famous Doonkelberry pie, the boys set out to find some for her. Meanwhile, Perry and Dr. Doofenshmirtz find themselves across the ocean as Doofenshmirtz returns home to renew his Druelselsteinian driver's license. Back in Danville, Candace is convinced she has discovered the answer to her busting problem, in a new episode of "Phineas and Ferb," FRIDAY, MARCH 30 (9:15-9:30 p.m., ET/PT) on Disney Channel.

"Phineas and Ferb" stars Vincent Martella as Phineas Flynn, Thomas Sangster as Ferb Fletcher, Ashley Tisdale as Candace Flynn, Mitchel Musso as Jeremy, Caroline Rhea as mom Linda Flynn-Fletcher, Richard O'Brien as dad Lawrence Fletcher, Dee Bradley Baker as Perry the Platypus, Alyson Stoner as Isabella, Jeff "Swampy" Marsh as Major Monogram and Dan Povenmire as the nefarious Dr. Doofenshmirtz. "Phineas and Ferb" is a production of Walt Disney Television Animation.

Guest Starring in "The Doonkelberry Imperative" is Jennifer Grey as Svetka.

"Quietest Day Ever" was written by Jim Bernstein and directed by Jay Lender

"The Doonkelberry Imperative" was written by Martin Olsen and directed by Robert Hughes.

"Phineas and Ferb" carries a TV-G parental guideline.