The Nine Network's Australian version is a more reasonable instance; it held the same Monday night timeslot for seven years, and it's been on weekdays at 5:30 since 2009.
Fan Nickname: The show's name is commonly shortened to Millionaire, including on the show itself. Meredith rarely, if ever, says the show's full title anymore.
"Llama" was a longtime fan term for any question gotten wrong in the first five questions ($100-$1,000 under the original money ladder).
I Am Not Spock: Especially during the early 2000s, Regis was so identified with this show that nearly everyone that saw him outside the context of the show couldn't help but ask him "Is that your final answer?" Regis mentioned this numerous times in his autobiography, Who Wants to Be Me? (in one instance, he didn't want to go get his wife popcorn from the theater snack stand because he didn't want to have to deal with the person behind the counter asking: "Is that your final popcorn?!"). The book even featured a comic on the back cover where an unamused Regis is asked this by everyone, culminating in him snapping by shooting a guy and ending up on death row. What does the last rites priest ask? "Is that your final meal?"
Missing Episode: The first US celebrity edition's episodes (where Drew Carey and Rosie O'Donnell won $500,000 each for their charities), and the episode where Ed Toutant returned after a flawed $16,000 question and went on to win a $1,860,000 progressive jackpot, have never been rerun on GSN even though Millionaire reruns are quite common on that network.
The Pete Best: Averted. Meredith hosted the show for 11 years versus only 3 for Regis, but the show was at its most popular with Regis at the helm and both Meredith and Regis are known for more than just hosting Millionaire.