Pop's voice from "Snip Snip Horay!" reused in "Doggone It" and "A Hole Lotta Love".

Everytime Cub's death isn't caused by Pop.

Music from "Treasure those Idol Moments" reused in "Hello Dolly".

Fliqpy's scream from 'This Is Your Knife' reused in many HTF episodes

Cub's crying from "And the Kitchen Sink" reused in "Cubtron Z" and "A Handy Nanny".

Petunia's scream from House Warming reused in many HTF episodes.

Giggles' scream from "Doggone It" reused in many HTF episodes.

The ultimate Lumpy's killing montage!

Petunia's voice from "Wishy Washy" reused in "Pop and Cub's Christmas smoochie".

Fliqpy's scream from "Remains To Be Seen" reused in many Happy Tree Friends episodes.

Cuddles' screaming from "I Get a Trick Out of You" reused in "Ski Patrol".

Disco Bear's high-pitched scream from "Blind Date" reused in many HTF episodes.

Lifty's scream from "Milkin' It" reused in many Happy Tree Friends episodes.