Looney Tunes

Looney Tunes is an animated show that has been referenced to in The Simpsons many times.

References to Looney Tunes in The Simpsons

"Homer Alone" - The Brat'us Don'thaveacow'us & Homo Neanderthel'us scene makes a reference to the Wile E. Coyote Cartoons.
"Lisa's First Word" - When toddler Bart hears Lisa say her first, he exclaims "Sufferin' sucatache!", Sylvester's catchphrase.
"Bart's Inner Child" - The scene where Homer dumps the trampoline of a cliff is a parody of the Road Runner cartoons.
"The Springfield Files" - Marvin the Martian appears in a line-up of aliens.
"The Itchy & Scratchy & Poochie Show" - June, the voice of Itchy and Scratchy, claims she did the voice of the Road Runner, but only was able to do one meep as the studio doubled it up.
"Lisa's Sax" - Michigan J. Frog appears as the mascot of The Warner Brothers Network.
"Brother's Little Helper" - Chief Wiggum calls Bart "Drugs Bunny".
"The Last of the Red Hat Mamas" - The rabbit at the Easter celebration is called Hugs Bunny.
"Smoke on the Daughter" - The couch gag shows Wile E. Coyote paint the couch on the wall. The family run into and gets hurt as Maggie zooms in and exclaims the Road Runner's one words "Meep Meep".
"Apocalypse Cow" - One of the chickens is named "Leghorn", a reference to Foghorn Leghorn.
"The Scorpion's Tale" - Wile E. Coyote and Road Runner appear in the desert.