Many games are played on "I'm Sorry I Haven't a Clue", some frequently and dozens less often. A few have been played only once, either because the joke works only once or because they were not particularly successful. Popular games include "One Song to the Tune of Another", "Mornington Crescent", "Sound Charades", "Late Arrivals", "Double Feature", "Cheddar Gorge" and "Uxbridge English Dictionary". "One Song to the Tune of Another" is always introduced using a complex analogy, despite its self-explanatory title, often ending with a joke at the expense of Colin Sell.