Numa Numa Dance (2004)
Like "Starwars Kid", this is pre YouTube.
"Numa Numa Dance" was released on December 6, 2004 on the website Newgrounds. The video shows Gary Brolsma lip-syncing the song with lively gesticulations and dance moves. From there it was copied onto hundreds of other websites and blogs. According to a 2006 report by the BBC, based on page impression figures collated by viral marketing company The Viral Factory, "Numa Numa Dance" was the second-most-watched viral video of all time, with 700 million views, losing out only to "Star Wars kid". (Wikipedia)
Brolsma later made appearances on ABC's Good Morning America, NBC's The Tonight Show, and VH1's Best Week Ever.