The "Letter of the Day," or "Cookie's Letter Time," is a segment introduced in 2002. Cookie Monster hosted the segment with cameo appearances by guests for the first two years. The original segments involved a letter written in icing on a cookie, which Cookie Monster tried to stop himself from eating, but invariably ate it anyway. In 2004, Prairie Dawn joined "Letter of the Day;" these segments involved a foam letter, which Prairie Dawn kept trying to stop Cookie Monster from eating, but Cookie Monster ate it anyway. Segments produced in 2005 involved "The Letter of the Day Games": a game show introduced by an energetic off-camera announcer (voiced by Matt Vogel). In 2007, the Letter Of the Day sketches became less common. Starting in 2009, Murray Monster hosts both the Letter and Number of the day segments. A brief clip of this was seen in "Sesame Street"'s 2002-2006 opening sequence.