When The Count has to leave his Counting Booth, Elmo and Abby agree to become the official Counting Booth Counters. Find out what happens as they count by 2, 5, and 10! Also in this episode: Christina Applegate and Elmo talk about the word booth"... and Elmo might even get a kiss. Tune in for a special double helping of Bert and Ernie as they sing A Ding Along Song" and add numbers. Plus, Abby's Flying Fairy School takes a trip to Colonial Trolliamsburg, and Elmo's World is all about eyes! Brought to you by the letter V and the number 18.