Voted Time magazine's "Invention of the Year" for 2006, YouTube allows users to upload and share their personal videos with millions of people all over the world. Some of the most popular videos have turned their creators into overnight celebrities. Rachael gets the stories behind a few of the stars of this Internet phenomenom.

The Luke Johnson Experiment

Do you want to reach out and touch someone? Then give Luke Johnson a ring! While some prefer to have an unlisted phone number, Luke posted his for all the world to see and even requested that people call him! Over 1.8 million people have viewed his video so far, and he tells Rachael that he's received 130,00 calls -- much to his wife's chagrin! He's talked to people for five minutes or five hours, depending on how long they want to talk. Check out his video here, and pick up the phone -- he's expecting your call!

Bride Has Massive Hair Wig Out

Over 3.5 million people have learned a new definition of the term "Bridezilla" after viewing Jodi Behan cut off her hair during a pre-wedding freakout. But was this bride's meltdown real or staged? Rachael talks to Jodi and learns the secret of her infamous "wig out." (Watch the video clip for their chat!)

Sleepy Spudgy

When Tammy Rozelle's dog Spudgy was hit by a car as a puppy, little did she know that the resulting injury would turn her dog into an Internet superstar! "It ran over his nose," Tammy tells Rachael, "so part of his nasal passage is blocked. Sometimes he sleeps standing up." Watch "Sleepy Spudgy" try to stay awake, and join millions of other Internet users in a collective, "Awwwwww!" Watch the video here.