Ed McMahon's Legacy: Britney Spears, Justin Timberlake And Aaliyah

Britney Spears took to Twitter to remember the late Ed McMahon, who was the host of "Star Search" when Spears first appeared singing on TV in 1992. Britney didn't win, though her performance did help her get a spot on "The Mickey Mouse Club," which jumpstarted her whirlwind career.

Spears isn't the only "Star Search" veteran to go on to bigger and better things, though. Here are some of the other superstars who got a little help from Ed McMahon.

» Justin Timberlake: Timberlake is an incredible entertainer, capable of singing, dancing, acting, writing comedy and directing. But did you know he can also line dance? Timberlake (performing as Justin Randall) performed a country song on the show in 1993, complete with cowboy hat and boots. It didn't get him the win, but it's probably the last time in his life where he didn't come out on top.

» Aaliyah: The late R&B singer was on the show as a 10-year-old in 1990. She sang "My Funny Valentine." By 1992, she had signed a contract with Jive Records, and she had a hit single by 1994 (in "Back & Forth").

» Alanis Morissette: Alanis Nadine (as she was credited on the show) had already starred in the hit Canadian kids' show "You Can't Do That on Television" when she performed on "Star Search" in 1990. She lost after one round, but hit on stardom five years later with "You Oughta Know."

» Christina Aguilera: When she was only 8 years old, the girl who would later be known as Xtina walked onto the "Star Search" stage and belted out an impressively confident version of the jazz standard "Sunday Kind of Love." It didn't carry her to victory, but it did help her score a spot on "The Mickey Mouse Club" three years later.

» Dave Chappelle: "Star Search" wasn't just about singing — there were also competitions for dancers, spokesmodels and comedians. A lot of comics got early television exposure through the show, among them Rosie O'Donnell, Dana Gould, Norm MacDonald, Drew Carey and Kevin James. But the one that stands out is Dave Chappelle, who took to the "Star Search" stage after already establishing his cred as a stand-up in New York. It's amazing to think that Chappelle was able to clean up his act enough to get it broadcast on network television.