Dane Cook sings to Taylor Swift

Dane Cook surprised fellow Tonight Show guest Taylor Swift earlier this week with an impromptu song in her honor. Cook appeared on the show to promote his greatest hits album, I Did My Best. During the interview, however, he told host Jay Leno that he was such a big fan of the Speak Now singer that he had to show his appreciation. "I thought I would do something as a special and memorable moment for you tonight," Cook told Swift as she sat beside him. Taylor is currently slated to play 87 shows in 19 countries spanning four continents on the Taylor Swift “Speak Now World Tour 2011″, which kicks off February 9th in Singapore.

Here's  the video of the song