Simpsons - Large Marge (in this episode theres a protest and there signs said ban beavis and butthead crossed out)

 

Simpsons - D'oh-in' in the Wind (Grandpa Simpson and Jasper sitting on a park bench laughing like B&B)

 

Simpsons -  Lisa on Ice (The children renamed the school auditorium to Butthead Memorial Auditorium)

 

The Critic - A Song For Margot (In this episode theres a star trek/beavis and butthead spoof with the main star trek character asking keanue reeves who wrote beavis and butthead rule on the back of his head. he replies it wasnt us dude and him and his friend start laughing like beavis and butthead)

 

King Of The Hill - Après Hank, le Deluge (In this episode theres a flood watch and Highland is mentioned, thats where beavis and butthead are from)

 

Full House (In a shitty episode of the shitty show full house the older daughter says you went out with beavis and butthead referring to these dumb ass "rebel" guys her sister and friend drove around with)

 

Step By Step (in 1 or more episodes there were 2 teenage guys impersonating beavis and butthead)

 

Movies:

 

Austin Powers International Man of Mystery (Dr Evil accidentally swicthes the channel on his tv to beavis and butthead)

 

Office Space (Peter Gibbons (Ron Livingston) lives in the "Morningwood Apartments," a reference to a frequent theme of director Mike Judge's "Beavis & Butthead)

 

True Lies(1994) starring Arnold Schwarzenegger. He is following two terrorists and he calls them 'beavis and butt-head'. 

Halloween 6(1995) one the characters, Tim, imitates Butt-head's laugh by saying "huh-huh..Cool!"