Regis Philbin's catchphrase: 'Is that your final answer?'
John Carpenter became the first top prize winner in 1999
First US game show to offer $1 million prize
Introduced 'Ask the Expert' lifeline in 2008
Jimmy Kimmel hosted the 2020 celebrity revival
Syndicated version began in 2002
Meredith Vieira hosted the syndicated version for 11 seasons
Format changes included 'Fastest Finger First' and 'Clock Format'