Jim Gillette, best known for his work as lead singer for the band Nitro, and their hair-metal masterpiece Freight Train [Warning: Loud. Embarrassing. Potential and unexpected earworm.], has also helped out the Mythbusters, and now, the intent has provided his greatest gift; Vocal Power Voice Lessons.
"To Celebrate the Phenomenal Music of Disney's Frozen, Cast Members took to the Stage to Treat a Small Audience to a Live Performance." Kristen Bell took it one step further, by performing her song, Do You Want to Build a Snowman with each stanza done as the main character Anna at a different age.
Vocal artist Nick McKaig provides his own accompaniment in this amazing a capella cover of the Indiana Jones theme. [more inside]
The popularity of "Somebody That I Used to Know" has made it a fairly ubiquitous earworm; so two guys in a car brilliantly deal with That Gotye Song.
Apparently there is no trickery here; just a lot of practice, which allows this guy to sing backwards. [more inside]