This week, Tegan and Sara appeared on the holiday episode of 90210, performing the glittery electro-pop single "Closer" from their forthcoming seventh studio album Heartthrob.

The twins join a long line of great bands that have appeared on teen soaps -- which have become a powerful marketing tool for independent acts over the past decade. The O.C., which aired from 2003 to 2007, was a trailblazer in this movement, paving the way for other shows to make indie rock a focus -- or, if you ask the show's creator Josh Schwartz, a main character.

Everyone from The Killers to Modest Mouse to The Walkmen played The Bait Shop to an adoring audience made up of tastemaking Seth Cohen (played by real-life music geek Adam Brody) and his friends -- and the exposure these acts gained during a time when the music industry was grappling with an uneasy transition into the digital age was invaluable. Rooney, the first band to play the show, told Rolling Stone it experienced a "200 percent increase in record sales" after its appearance while Death Cab for Cutie became briefly synonymous with Seth Cohen.

And the bands weren't the only ones to benefit; young, would-be fans got to discover cool music that radio wouldn't touch at the time. (This writer discovered Modest Mouse via The O.C.)

While "the O.C. effect" is undeniable, it wasn't the first show to feature cool bands. Here's our list of the 15 best musical appearances on teen TV, from .

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  • The Breeders, Buffy the Vampire Slayer

    Air date: Nov. 5, 2002 After their cover of the <em>Buffy</em> theme became a favorite at live shows, The Breeders' Kim and Kelley Deal were asked to make cameos on the show, playing The Bronze. Fun fact: former cast member Seth Green reportedly had a crush on Kelley, but then, who didn't?

  • Juliana Hatfield, My So-Called Life

    Air date: Dec. 22, 1994 Angela walks in on a homeless girl (Hatfield) who may or may not be an angel playing guitar in the school's band room. The song? "Make It Home." An alt-era holiday classic!

  • Heavy D, The Fresh Prince of Bel-Air

    Air date: Oct. 29, 1990 As Will and Carlton battle for the affections of Melinda, they tell wild tales; Will's involves a scenario in which Heavy D offers advice to Bo Jackson. He diddly-dees a little but doesn't really drop a verse.

  • The Flaming Lips, Beverly Hills 90210

    Air date: March 1, 1995 The fearless freaks play a live performance of their breakout 1993 hit "She Don't Use Jelly" at The Peach Pit and receive a thumbs up from noted prepster Steve Sanders: "I've never been a big fan of alternative music, but these guys rocked the house!" The band still plays <em>90210 </em>clips at live shows.

  • Violent Femmes, Sabrina the Teenage Witch

    Air date: Jan. 31, 1997 Sabrina casts a spell on the Violent Femmes for Libby, who then perform an impromptu set that includes "Please Do Not Go" at a record signing. Awkward dutch angles and dancing ensue.

  • Bif Naked, Buffy the Vampire Slayer

    Air date: Oct. 19, 1999 Bif played a trifecta of hits -- "Moment of Weakness," "Anything" and "Lucky" -- from her platinum 1998 album I, Bificus at a frat party. Buffy has sex with Parker to "Lucky."

  • C+C Music Factory, Blossom

    Air date: Feb. 3, 1992 Blossom and Six wait for 15 hours outside of Rockin' Records for concert tickets, and despite being first in line they're issued random draw "priority wristbands," giving them terrible chances at good seats. Thankfully, C+C immediately pull up, shake their hands and offer them front-row tickets (natch) after they perform a choreographed dance sequence together.

  • Marilyn Manson, Clone High

    Air date: Nov. 3, 2002 When Gandhi ingests too much X-Stream Blue (pancake batter and blue paint in a sports bottle) during the student counsel elections, Dr. Marilyn Manson steps in to teach the kids about malnutrition.

  • Issac Hayes, The Fresh Prince of Bel-Air

    Air date: Feb. 25, 1995 Will and Lisa run away to Vegas to get married by an Isaac Hayes impersonator (played by Hayes himself). He <a href="">plays</a> a wedding version of "Theme from Shaft."

  • No Doubt, Dawson's Creek

    Air date: Nov. 13, 2002 When artists appear on these shows, it's usually at an intimate club or in the high school gym. The gang from the Creek simply attended a No Doubt stadium gig at which they played "Hella Good," "Underneath It All," and "Magic's in the Makeup." Hey, at least we know that the band isn't lip-syncing as the thousands of kids jump up and down.

  • The Shins, Gilmore Girls

    Air date: April 13, 2004 Rory and Paris reluctantly attend a spring break concert at which Paris kisses Rory while they attempt to "sniff out the hip" as they "do spring break." Note: the kiss doesn't actually take place during "So Says I," The Shins' indie pop examination of the communist system, but during "The Laws Have Changed" by The New Pornographers.

  • Modest Mouse, The O.C.

    Air date: Jan. 26, 2005 Modest Mouse plays The Bait Shop and Seth gets hilariously hammered and ruins a moment between Summer and Zach. Summer: "Wait! Your breath smells like Marissa! You are so drunk!"

  • Death Cab for Cutie, The O.C.

    Air date: April 20, 2005 After years of dropping the band's name, Death Cab for Cutie finally play at The Bait Shop ("Title and Registration" and "The Sound of Settling") and Seth misses them because he's <a href="">busy working</a> on his comic book. Summer again gets the best line in the episode, spouting this self-referential gem: "Where other than the Bait Shop are tickets always plentiful and the band never too loud to talk over?"

  • Sonic Youth, Gossip Girl

    Air date: Oct. 12, 2009 Sonic Youth cleans up nicely to play an acoustic version of "Star Power" on Gossip Girl, breaking the brains of hipsters everywhere. Kim Gordon also takes a dramatic turn and officiates a wedding.

  • Tegan and Sara, 90120

    Air date: Dec. 11, 2012 The twins play a Christmas party at the Offshore, providing a nice soundtrack for the touching scene in which Dixon tells Annie he's going to walk again in front of her wheelchair-bound boyfriend. Awkward!