I, for one, welcome our new (insert word) overlords

From Wikipedia, a list of neologisms from The Simpsons. Similar to such lists made for Seinfeld, although this has many more words. Some favorites:

Führerific: How Bart describes what is claimed to be Hitler's car "It's Führerific."

Sacrilicious: Homer's description of his act of eating a waffle that Bart threw on the ceiling, which he was praying to as if it were God. A portmanteau of sacrilegious and delicious.

Snacktacular: In the episode "Lisa Gets an "A"", Snacktacular is offered by Edna Krabappel as an acceptable atomic weight for the element 'Bolognium' as taken from a promotional periodic table provided by Oscar Mayer.