The year's biggest hits on the Internet's top video channel were anchored by an improbable singing sensation, a groggy boy nursing a sore mouth, a bride and groom dancing down the wedding aisle, supernatural heartthrobs and roller-skating babies.

Susan Boyle

The eclectic cast of characters starring in YouTube's most-watched videos of 2009 served as a reminder of the quirky appeal of a Web site that accepts about 20 hours of new video every minute.