Han Solo in Firefly, aliens in South Park, the fifth housemate in The Young Ones?

Putting TVs Easter Egg legends to the test.

Any bozo can watch TV.

Jake the Dog kissing a unicorn in Cartoon Network cartoon Adventure Time

To be a true TV fan requires homework.

True TV fans know about Easter Eggs and running gags and fourth-wall-breaking references.

9, and more.

Screengrab of South Park with an arrow pointing at a hidden alien in the fence

But do they know enough to sort TV show urban myths from the facts?

One such is the inclusion of Greys, or alien visitors, in the background of otherwise unrelated episodes.

while they were working on a scene.

Screengrab of Bluey with an arrow pointing at the hidden Long Dog under the table.

According to this ABC article, the animators only started including them from episode five Daddy Robot onwards.

Silver Hare Statue inInside No.

9hare statue became such a favourite that it inspired its very own episode in series fours Tempting Fate.

Screengrab of Inside No. 9 episode “Bernie Clifton’s Dressing Room” with an arrow pointing at the silver hare statue in the background

Its a nice little game we play,Inside No.

9co-creator Steve PembertontoldDen of Geekin 2017.

If only theyd stuck it on space eBay, their smuggling days could have been behind them.

Screengrab of Firefly episode “The Message” with an arrow pointed at a figurine of Han Solo in carbonite

that tickled the team so much that it became A Thing.

Reference to Superman inSeinfeld

In Every Episode?No.

But is there a Superman reference in every single episode?

Screengrab of The Young Ones episode “Demolition” with an arrow pointing at the hidden fifth housemate

Nah, as Barry Freiman has shown exhaustivelyin this blog post.

Waving Snail inAdventure Time

In Every Episode?All but five.

Seeing as he began life as an Easter Egg though, well include him.

Screengrab of Fringe with an arrow pointing at the Observer in the back of shot

Despite making it into the story on a number of occasions, mostly, hes just happy to wave.

Screengrab of Psych with an arrow pointing at a pineapple in the background

Screengrab of Jerry Seinfeld’s apartment in episode “The Shoes” with an arrow pointing at a Superman magnet

Finn and Jake wearing wizard robes in cartoon Adventure Time with an arrow pointing at a waving snail.