Six former winners compete for $100,000; videos include a dog who howls with a toilet paper roll in his mouth: a 14-month-old boy who has been hiding his father's credit cards, a boy who scares his younger brother with a mask.

A Halloween-themed episode includes a montage of dogs in costumes.

A teen waxes her lip for the first time; a dog gets into the garbage despite his owner's best efforts; cooking mishaps.

A boy flushes the toilet too soon during a goldfish funeral; animal make strange sounds; frightened people on amusement park rides.

A soldier surprises his girlfriend; a Marine with an unusual way of cutting cake at his wedding; dogs eating with human hands.

Videos include a dog who calls his owner by name, dogs walking on two legs, funny babies and a marathon runner who has a surprise for his girlfriend.

Kids saying funny things; a bride and groom knock their cake over; a kid removes his tooth by tying it to an anvil.

Family members do embarrassing things not realizing they're being taped; a hen tries to hatch light bulbs; dog park.

People dressed as superheroes; people learn loved ones are pregnant; talking pets; Pick the Real Video.

Celebrating the show's 500th episode; highlights include a woman finding half a $20 bill in her dog's mouth, wedding mishaps and a teen talking after dental surgery.

Cranky dogs; practical jokes gone wrong; dancing animals; special guest Carrie Ann Inaba.

Wet willies; Name That Sound; a bear breaks into a parked car; Too Far, Too Short, Just Right.

A family finds the missing remote control in a wrapped Christmas gift; kids get excited when they realize they're on their way to the beach; a snake loose in a living room.

A dog stares at an aquarium; a man finds a squirrel has filled his golf bag with nuts; kids react to learning they have a sibling on the way.

A teenager attempts a handspring; cats and dogs make mischief; a doctor fools around in a wheelchair.

A woman reacts to news that she is going to be a grandmother; a girl thinks she is talking to Santa on the phone; sisters record a video for their dad; a man scares his son; a girl rewrites a nursery rhyme.

A beach wedding proposal, "Name That Sound," a dog's reaction to a ring and things at the zoo.

A boy confesses to lying to get out of school; a family discovers its new hamster has babies; people getting sprayed by a kitchen sink hose.

Funny signs; people on crutches; a dog reacts to wearing little booties.

Sisters react when their mom reveals she's pregnant; funny dog videos; inventive wedding proposal.

A boy sneaks food while pretending to pray; a girl asks if a pregnant woman ate the baby; a girl makes animal faces and sounds; two men try to catch a spider; a tired toddler tries to stay awake.

The makers of this season's funniest video win a vacation for four.