Episode 1
So Long, Old Paint/Trembly Assembly/Private I
Mr. Wilson is painting his house and Dennis invites himself over to help out. Needless to say, Dennis' "helpin...
Episode 2
A Visitor from Outer Space/Train That Boy/Genie Madness
An alien from another planet lands in Dennis room in a quest for peace and quiet... but Dennis wants to show h...
Episode 3
Cheer Up/Ghostblusters/The Life You Save
Mr. Wilson slips on Dennis' skateboard and has to go to the hospital. Once there, Dennis arrives to cheer Wils...
Episode 4
Shark Treatment/Jungle Bungle/Racetrack Menace
They're shooting a "Jaws"-type movie at the beach, when the remote control falls into the mechanical shark's m...
Episode 5
All the President's Menace/The Love Rowboat/Wilson the Menace
Dennis and his family visit Mt. Rushmore, which is in the middle of being renovated. Dennis scales the scaffol...
Episode 6
Fishing for Trouble/Future Fortune/Time Bomb
Dennis goes fishing with Mr. Wilson, who's out to finally catch "Old Gramps", smartest trout in the whole lake...
Episode 7
Spa Blahs/Whale of a Tale/Disaster on the Green
Mrs. Wilson has bought George a gift membership at a Health Spa. Dennis accompanies Wilson on his first visit,...
Episode 8
Here, Kitty!/Circus Berserkus/The Monster of Mudville Flats
Dennis brings home a stray kitten which Alice makes him turn over to the Wilsons. But the "kitten" is actually...
Episode 9
The Price of Stardom/Space Menace/The Magic Flute
Dennis is made the prop man for the community theater whereupon he turns a serious drama into a roaring comedy...
Episode 10
Dennis' Yard Sale/The Abominable Snow Menace/It Came from the Planet Dennis
When Henry and Alice leave to go to a "Poor People's" charity auction, Dennis decides to help the poor people...
Episode 11
Snowman Madness/The Invisible Kid/Home Destruction
Slippery ice causes chaos when Henry and Dennis set out to make a snowman. After tumbling and sliding all over...
Episode 12
Chitty Chitty Moon Walk/Wet 'N Wild/Dennis at the Movies
Dennis keeps his eye on the secret solar powered moonwalker for his Dad. But when Joey touches the wrong butto...
Episode 13
The Supermarket/The Big Candied Apple/The Defective Detector
Dennis visits a supermarket and completely dismantles it. The Mitchell's visit New York. The Statue of Liberty...
Episode 14
Henry the Menace/Come Fly with Me/Camping Out
Henry's father comes to visit, and he tells Dennis what Henry was like as a little boy. Not surprisingly, the...
Episode 15
Up Up and Away (From Here)/Going Ape/Dennis the Pirate
Dennis, George, Henry, and Joey all enter a balloon race. Dennis wins the race, but only after a wild series o...
Episode 16
It's a Ruff Life/Professor Myron Mentalapse/Dennis Race 2000
When Ruff upsets one of PeeBee's experiments, the dog and Joey end up with their brains switched, Ruff can spe...
Episode 17
A Better Mousetrap/The Wizzer of Odd/Canine Car Wash
Mrs. Wilson will not return until Mr. Wilson gets rid of all the mice. PeeBee's special mousetraps are regarde...
Episode 18
Ride'Em Cowboy/Tenting Tonight/A Hair Raising Tale
Dennis and his parents visit the beautiful ranch of his favorite Uncle Bud. Uncle Bud has always wanted to win...
Episode 19
Medieval Evil/Beaver-Mania/Say Uncle
Episode 20
Hopping Mad/Mayan Mayhem/The Big Power Trip
Dennis buys a magician's hat and gives it to Margaret at her cello recital. The hat goes wild, spewing frogs a...
Episode 21
Strong Medicine/Gold Strike/Lights! Camera! Mud!
Dennis is blasted by a "strength ray" that Peebee has invented, and suddenly has super muscles. he goes around...
Episode 22
Invasion of the Blob/Wild West Show-Down/The Hen Party
A blob from outer space enters various forms tree, Ruff, Alice, Henry, Mr. Wilson, baseball in search of a goo...
Episode 23
Up Up and Oh Boy!/The Company Picnic/Aw Nuts!
On a bicycle-built-for-two Henry and Mr. Wilson race after Dennis, Margaret and Joey who have accidentally tak...
Episode 24
Clip-Joint Capers/Tanks for the Memory/Second Honeymoon
After making the barber's guard dog sick, Dennis volunteers Ruff for watch dog. When bank robbers next door dr...
Episode 25
A Couple of Coo-Coos/The Cloneheads/Nothing But the Tooth
Dennis accidentally locks the keys in the car while out in the country with Mr. Wilson for a demonstration of...
Episode 26
Mummy's Little Boy/Horsing Around/Dennis Plasters Pamplona
Wrapped head to toe in bandages while playing hospital, Joey gets picked up by an ambulance and taken to the h...
Episode 27
Dennis Predicts/Dennis & the Kangaroo Cavalry/Meatball Mess
Episode 28
My Fair Dennis/A Good Knight's Work/Life in the Fast Lane
Episode 29
A Nightmare at the Opera/A Royal Pain/Having a Marbleous Time
Episode 30
Marky the Menace/Dennis the Genius/A Step Ahead
Episode 31
The Boss Gets Scalped/Mr. Dennistein/Lean Green Jumping Machine
Episode 32
Laundry Business/Journey to the Center of Uncle Charlie's Farm/Dennis Springs Into Action
Episode 33
Ruff's Hat Trick/A Moving Experience/Lemon-Aid
After Dennis gets his father stopped by a policeman, Ruff swipes the cop's hat and Dennis and the cop chase hi...
Episode 34
Sounds in the Night/Dennis Does Hollywood/Ruff to the Rescue
Mischievous Dennis Mitchell (Mason Gamble) makes the life of neighbor George Wilson (Walter Matthau) miserable...
Episode 35
The Bicycle Thief/Menace of the Mine Shaft/Margaret's Birthday Party
Episode 36
So Sorry!/Shock Therapy/Yard Wars
Mischievous Dennis Mitchell (Mason Gamble) makes the life of neighbor George Wilson (Walter Matthau) miserable...
Episode 37
Ruff's Masterpiece/Going to the Dogs/Big Baby
Episode 38
Building a Better Dog House/Dennis and the Dragon/Hic!
Episode 39
Strike Up the Band/Queen of Chinatown/Tale of a Tux
Episode 40
Give a Little Whistle/Charmed I'm Sure/After Hours
Episode 41
Baseball's Best Ballplayer; Mr. Wilson's Diet; The Backyard Band
Episode 42
Double Dennis/Timber Wolves/Help Not Wanted
Episode 43
Million Dollar Dennis/3-D and Me/Barber Shop Disharmony
Episode 44
Bowling for Dennis/Dennis Conquers the Navy/The Longest Half-Yard
Episode 45
Vampire Scare/Give Me Liberty or Give Me Dennis/Wilson for Mayor
Episode 46
Dangerous Detour/The Prodigy/The Chimp
Episode 47
High Steel/Bicycle Mania/Little Dogs Lost
Episode 48
Dennis Destroys Dallas/Black & Blue Hawaii/Oil's Well That Ends Well
Episode 49
Door to Door Bore/Dennis in Venice/Young Sherlock Dennis
Episode 50
Surf's Up/Yo Ho Ho/The Karate Kiddie
Episode 51
Dennis and the Deep/K-9 Kollege/Housepests
Episode 52
Animalympics/No Bones About It/Dennis Takes the Cake
Episode 53
Quiet Riot/The Magic Pen/A Feeling for Stealing
Episode 54
Househusband Henry/Wheeling & Double-Dealing/Stop That Car!
Episode 55
Lights, Camera, Auction!/Boy Ahoy/Faulty Alarm
Episode 56
Hail to the Chief/Dennis in Microchipland/Handy Dandy Dennis
Episode 57
Dennis the Businessman/Soccer it to Me, Dennis/Camp Over Here-Over There
Episode 58
Hullaballoo at the Harmony Homes/Phantom of the Wax Museum/Dennis and the Gypsy Woman
Episode 59
Attack of the Giant Tomatoes/The Dinosaur Doozy/Funhouse Grouch
Episode 60
Dennis Rocks Out/Deserted with Dennis/Fashionable Menace
Episode 61
Back to the Drawing Board/Part-Time Helper/G.I.George
Episode 62
Wanted: Scarface Wilson/Ruff Come Home/10-4 Dennis
Episode 63
Heroes Unwelcome/The Martians are Coming/Ancient Olympics
Episode 64
Pool Haul/Fool for Gold/Nothin' to Be Afraid Of
Episode 65
Yankee Doodle Dennis/Dennis the Barnstormer/Trial and Error