Famed radio and TV personality Casey Kasem died today at the age of 82. Fans and celebrities took to social media to memorialize one of America’s most beloved presenters.

Ryan Seacrest took over Kasem’s flagship program, "American Top 40," in 2004 and quoted Kasem’s longtime sign-off as a dedication to his predecessor.

The executive producer of the Howard Stern Show, Gary Dell’Abate, better known as Baba Booey, wrote a piece about how Kasem influenced him as a child. Dell’Abate describes how Kasem’s "American Top 40" gave him stability during an otherwise troubled period in his life.

Others remembered Kasem as the voice of Shaggy in the cartoon "Scooby-Doo." Watch Kasem do his Shaggy voice at a 1980s telethon fundraiser here.

Carson Daly, former host of MTV’s "Total Request Live," expressed his condolences.

Kasem’s daughter, Kerri, talked about her father on Facebook. Kerri took her father off life support on Friday after a legal battle with Kasem's wife, Jean, who sought to keep Kasem on food, fluids and medication. Kasem suffered from Lewy body disease.