Candace sees this as an opportunity to bust her brothers. It's Phineas's birthday and for the special occasion, Ferb puts together a clip show of the gang's favorite moments. Doofensmirtz finds a dodo bird egg and is convinced that it is a fierce bird-monster that can help him take over the Tri-state Area, but discovers the exact opposite when the egg hatches. Meanwhile, Candace is inspired by train engineer Glenda's can-do attitude and decides to 'give up' on busting her brothers. While visiting their grandparents, the kids decide to create and race a giant hot air balloon. Guest stars: Tina Fey as Annabelle Johnson Doofenshmirtz's building is put up for sale so he tries to convince a prospective buyer, Annabelle (voiced by Tina Fey), who turns out to be a long lost relative of the Johnson family, that it is not worth buying.

Johnson, and also at the library where she promised Mom she would read to the kids, but things go haywire when she accidentally uses unstable prototypes of the super-speed boots. Candace decides to wear them so that she can be in two places at once at Jeremy's family picnic, where she runs into Mrs. Phineas and Ferb's newest invention is a pair of boots which makes the wearer extraordinarily fast. Sergio Armendariz, Jon Colton Barry, Jennifer Keene & Martin Olson Michael Diederich, Antoine Guilbaud, Kyle Menke & Perry Zombolas Meanwhile, Phineas and Ferb build a giant robot dog that causes a lot of mischief. Doofenshmirtz's 'Combine-inator' zaps her and Jeremy, literally joining them at the hip. But while visiting Jeremy and his mom, Mrs. Doofenshmirtz is trying to rain out a big soccer game, just so he can watch his favorite Spanish soap opera.Д¬andace realizes that she needs to spend more time with Stacy, so she vows to spend the whole day with her only.

Meanwhile, Candace works herself into a frenzy as she decides that she needs to find out what Jeremy likes about her. Episodes No.Д«ad weather spoils Isabella's plan for the Fireside Girls to earn an achievement patch, so Phineas and Ferb build a huge bio-dome to help her and her troop. The season was announced by Dan Povenmire and Jeff 'Swampy' Marsh on June 9, 2009, and was confirmed two days later.

Cold weather pop up truck camper