Today, catch phrases are frequently seen as an important part of marketing a character, with the phrase appearing on t-shirts and other promotional materials for the character's respective show or film.
Catch phrases attributed to real people often are often based on something that the person would be expected to say, as opposed to something they actually did. These are also known as misquotations. "Beam me up, Scotty" (see below) is a good example of this.
see also: Stock phraseSome well-known catch phrases
* These phrases occur only once in their respective film/series etc, but have still become catch phrases.