Candace uses boots that the boys invented to be in two places at once.
S1 E9: One Good Scare Ought to Do It
The boys try to cure Isabella's hiccups
S1 E22: How to Make a Monster/Oil on Candace
Grandfather tells the boys about a relative called Phineastein
S2 E27: Phineas and Ferb
School's out for the summer, and stepbrothers Phineas and Ferb decide to make each day an adventure.
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When the boys learn that Santa isn't coming to Danville, they take over.
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S3 E66: Run Candace, Run / Last Train to Bustville
S3 E67: The Great Indoors / Canderemy
The boys create a biodome so Isabella can earn her Fireside Girl patch.
S3 E68: The Belly of the Beast / Moon Farm
Phineas and Ferb make a mechanical version of a historical shark.
S3 E69: Phineas' Birthday Clip-O-Rama!
It's Phineas' Birthday and Ferb has come up with a plan to celebrate!
S3 E70: Ask a Foolish Question / Misperceived Monotreme
Candace discovers that the boys have invented a super computer.
S3 E71: Candace Disconnected / Magic Carpet Ride
When Candace loses her phone, she asks Phineas and Ferb for help.
S3 E72: Bad Hair Day / Meatloaf Surprise
Candace gives herself a bad haircut.
S3 E73: Tri-Stone Area / Doof Dynasty
It's the stone age and Phineas and Ferb decide to invent the wheel!
S3 E74: Supermollusk/ The Necklace
Mom tells Candace that she wants to spend the entire day with her.
S3 E75: Mommy Can You Hear Me? / Road Trip
When Candace is stuck in bed, the boys give her a box of things to do.
S3 E76: Skiddley Whiffers / Tour de Ferb
The kids build a giant version of their favorite childhood game.
S3 E77: My Fair Goalie
Ferb's cousins from England challenge him to a game of soccer.
S3 E78: Perry the Actorpus / Bullseye!
Perry wins a contest and becomes the spokesanimal for Totally Tools.
S3 E79: That's the Spirit! / The Curse of Candace
The kids encounter a strange boy who is convinced his house is haunted.
S3 E80: Escape from Phineas Tower / The Remains of the Pla
The boys' computer-controlled escape tower becomes self aware.
S3 E81: Ferb Latin / Lotsa Latkes
Phineas and Ferb decide to create their own language - Ferb Latin!
S3 E82: Phineas and Ferb Family Christmas, a / S'Winter
The boys decide to put on a family Christmas special.
S3 E83: What a Croc! / Ferb TV
The boys learn that animal celebrity, Crikey the Crocodile, is missing.
S3 E84: Mom's in the House / Minor Monogram
Phineas and Ferb decide to create a Perry that can do everything with them.
S3 E85: Excaliferb
Phineas and Ferb-a-Lot set out to find the legendary sword, Excaliferb.
S3 E86: Monster from ID / Gi-Ants
After losing a gift that Jeremy made, Candace is determined to recreate it.
S3 E87: Agent Doof / Phineas and Ferb and the Temple of Ju
Doof shows up at OWCA claiming to have had an epiphany.
S3 E88: Delivery of Destiny / Let's Bounce
Follow Paul the Delivery Man as he journeys to Phineas and Ferb's house.
S3 E89: Quietest Day Ever / Bully Bromance Breakup
When Mom asks the kids to be quiet, Phineas and Ferb created ninja outfits.
S3 E90: The Doonkelberry Imperative / Buford Confidential
Mom is out of Doonkelberries for her famous Doonkelberry pie.
S3 E91: Sleepwalk Surprise / Sci-Fi Pie Fly
Phineas and Ferb invent a new game - jet pack volleyball.
S3 E92: Meapless in Seattle
The boys are attacked by an alien robot!
S3 E93: The Mom Attractor / Cranius Maximus
Phineas and Ferb ask Candace what SHE wants to do today.
S3 E94: Sipping with the Enemy / Tri-State Treasure: Boot
Vanessa and Major Monogram's son, Monty, go out for coffee together.
S3 E95: Doofapus / Norm Unleashed
Doof turns himself into a platypus to defeat Perry.
S3 E96: When Worlds Collide / Road to Danville
Phineas and Ferb discover that a planet is hurtling directly toward Earth.
S3 E97: Where's Perry?
Phineas and Ferb go on safari while Perry stays behind to protect Danville.
S3 E98: Where's Perry?
While Phineas and Ferb are on safari, Perry appears with evil Carl.
S3 E99: Blackout! / What'd I Miss?
Candace is put in charge right before the entire city loses electricity.
S3 E100: This Is Your Backstory
Norm is the host of a reality show that looks back at the life of Doof.
S4 E102: For Your Ice Only / Happy New Year!
Candace pretends to likes hockey, and the boys descend from space.
S4 E118: Tri-State Trilogy of Terror
This Halloween episode contains three stories which see Perry become evil, Doof meeting a giant floating baby head that grants wishes, and Candace’s doll come alive and stalks her.