MULTIPLE PERSONALITIES YouTube singin' star Sam Tsui covers ''Don't Stop Believin''' — and edits the video so that there are five Sam Tsuis performing onstage together. (Guess the world isn't so lonely for this small-town boy.)
MULTIPLE PERSONALITIES: TAKE TWO Part of an Internet parody series known as ''Electric Spoofaloo,'' this one features a single actor playing every role in the series. It picks up speed toward the end when the ''cast'' performs ''Hot-Crossed Buns.''
MASH-UP MASTER Manny Garcia (another singing star in the YouTube firmament) does a mash-up tribute of ''True Colors/Defying Gravity'' (both of which have been featured on Glee) — and he seamlessly combines them into one epic ballad.