31 celebrities you probably forgot guest-starred on 'iCarly'
"iCarly" ran for six seasons between 2007 and 2012, starring Miranda Cosgrove and Jennette McCurdy.
The Nickelodeon sitcom included plenty of notable celebrity guest stars.
One Direction, Emma Stone, Michelle Obama, and Jane Lynch are among those who appeared on the show.
Long before his star-making performance as Elvis Presley in the biopic "Elvis," Austin Butler played a cute teen named Jake who had a terrible singing voice.
Nicole Gale Anderson, who starred in the Jonas Brothers-led Disney Channel sitcom "Jonas," had a minor role as a character named Tasha.
Doug Brochu from the Disney Channel sitcom "Sonny With a Chance" played a sweaty wrestler and friend of Freddie named Duke Habberman.
After Spencer saved Plain White T's frontman Tom Higgenson, the band performed "Our Time Now" on "iCarly."
In season one, "WandaVision" star Randall Park portrayed a school teacher named Mr. Palladino at Ridgeway Junior High School.
"Victorious" star Leon Thomas III played a musically inclined character named Harper in season one.
Ashley Argota, who starred on fellow Nickelodeon show "True Jackson, VP" played a gossiping teen at school.
Years before starring as Liam Dunbar on MTV's "Teen Wolf," Dylan Sprayberry appeared at the end of a season one episode as a prankster named Matthew.
In his TV debut, Big Time Rush's James Maslow played Shane, a guy who caught Sam and Carly's attention in the season two premiere.
"Glee" star Harry Shum Jr. played a Japanese comedian in the 2008 "iCarly" TV movie "iGo to Japan."
"American Idol" runner-up David Archuleta played himself, competing on the reality TV show "America Sings," in season two.
YouTuber Lucas Cruikshank, known by his alter ego Fred Figglehorn, appeared in season two. Unlike the rest of the world, Freddie didn't think the internet star was funny.
Drew Roy, who had a recurring role as a heartthrob on "Hannah Montana," played a bad boy named Griffin with an unlikely Pee Wee babies obsession.
Victoria Justice played an MMA fighter named Shelby Marx prior to starring in her own Nickelodeon show "Victorious."
"The Flash" and "To All the Boys" star Jordan Fisher played a kid named Clark who participated in a speed-dating contest to help Carly find a date for a girl's choice dance.
"Glee" star Chord Overstreet also guest-starred as one of the speed daters in the aforementioned episode. He played a band member and former model.
Model Emily Ratajkowski guest-starred as Tasha, Gibby's girlfriend, in season three.
Cosgrove's "Drake & Josh" costar Drake Bell popped up in an episode dedicated to bloopers and outtakes.
"Victorious" star Daniella Monet played a popular girl at a party thrown by Nora Dershlit.
"Glee" star Jane Lynch portrayed Sam's mom, Pam. Carly fooled them into attending a therapy session to work out their issues.
Cosgrove reunited with “School of Rock” costar Jack Black in season four. He played Spencer’s online foe from the game “World of Warlords.”
"13 Reasons Why" actor Justin Prentice appeared as an "iCarly" intern named Brad. Carly tried to set him up with Sam, unaware that she was interested in Freddie.
Kenan Thompson played himself in the "iCarly" and "Victorious" crossover TV movie, "iParty With Victorious."
"The Big Bang Theory" star Jim Parsons played a patient at a mental hospital named Caleb who thought he was from the future.
Former First Lady Michelle Obama guest-starred as herself in season five and helped Carly reconnect with her dad via video chat.
"Saturday Night Live" alum Taran Killam played one of Obama's secret service agents in the same episode.
One Direction — then comprised of Harry Styles, Niall Horan, Louis Tomlinson, Liam Payne, and Zayn Malik — had a memorable appearance in season six.
Jimmy Fallon and Tina Fey met Carly virtually in the final season.
Oscar winner Emma Stone guest-starred as a massive "iCarly" fan who couldn't resist the urge to ask Carly, Sam, and Freddie for a selfie when she saw them at an eatery.
The cast of "Pawn Stars" appeared as themselves in season six, when the crew traveled to Vegas.
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