Whose Line Is It Anyway began as a British improv comedy series in 1988, created by Dan Patterson and Mark Leveson, and became a global hit through the US version hosted by Drew Carey in 1998 and later Aisha Tyler. The format gives comedians like Colin Mochrie, Ryan Stiles and Wayne Brady games to perform with no script, and the title line became comedy shorthand online, in the same way the Law and Order dun-dun does, marking any clip as a spontaneous game.