Suggestions by @sedgwick25

The Strokes

as Plain White T's in ICarly (Movie Trilogy)

Lars Mikkelsen

as Dr. Strauss in Flowers For Algernon

Nicholas Britell

as Composer in ICarly (Movie Trilogy)

Tommy Chong

as Mr. Henning in ICarly (Movie Trilogy)

Marlon Wayans

as T-Bo in ICarly (Movie Trilogy)

Michael Banks Repeta

as Chuck Chambers in ICarly (Movie Trilogy)

Annalise Basso

as Wendy in ICarly (Movie Trilogy)

Alex Essoe

as Marta Trundel in ICarly (Movie Trilogy)

Derek Muller

as Cal in ICarly (Movie Trilogy)

Finn Wittrock

as Cort in ICarly (Movie Trilogy)

Josh Hutcherson

as Griffin in ICarly (Movie Trilogy)

Haley Lu Richardson

as Melanie Puckett in ICarly (Movie Trilogy)

PewDiePie

as Fred in ICarly (Movie Trilogy)

Pink

as Ginger Fox in ICarly (Movie Trilogy)

Caleb McLaughlin

as Harper in ICarly (Movie Trilogy)

Emilio Rivera

as Meekalito in ICarly (Movie Trilogy)

Alex Wolff

as Rodney Goober in ICarly (Movie Trilogy)

Ruby Cruz

as Shannon Mitchell in ICarly (Movie Trilogy)

Madison Hu

as Karen Yamakawa in ICarly (Movie Trilogy)

Owen Wilson

as Mr. Wembley in ICarly (Movie Trilogy)