Everything he does from his arrival in the city on Tuesday 3 September until he leaves on 5 September -- including, he hopes, an emotional reunion with his holiday sweetheart, will be filmed for "The One That Got away", a pilot under development by Nerd TV.
"I know it sounds crazy but when the opportunity came up to be part of this documentary and find someone from my past I had to take it!" McCormick said.
"I remember that her name is Margrethe, she is from Oslo and she will be 27 or 28 now. We met in Thailand travelling in 2007...that's all I've got!"
McCormick met Margarethe on the beach at Koh Samet, and the two were just at the start of a holiday romance when she had to leave to go back to Norway.
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"I hope if I find her she doesn't think I'm crazy! I'm going to Norway for a week to try and make contact so if anyone can help please tweet me at @keithmccormick8."