Ellen Albertini Dow

Ellen Albertini Dow appears in a scene from the 1998 movie "The Wedding Singer."

(New Line Cinema | AP)

Everyone's favorite rapping grandmother has died.

Ellen Albertini Dow, best known for her role as the sweet old woman in Adam Sandler's 1998 movie "The Wedding Singer," passed away on Monday, her agent told Deadline. She was 101.

According to E! News, Dow was a Pennsylvania native who studied acting in New York City before moving to Los Angeles, where she met her husband Eugene Dow. The actress appeared in more than 100 films and TV shows after a breakout role on "The Twilight Zone" in 1986.

Dow's biggest roles included movies like "Sister Act," "54," "Wedding Crashers" and "My Blue Heaven," and television shows "The Golden Girls," "Moonlighting," Murphy Brown" and "Family Matters." She also had a memorable scene on "Seinfeld" as J. Peterman's "momma," whose final words were "Bosco" when George Costanza tells her his secret ATM pin code.

But she may still be best known as the scene-stealing Rosie in "The Wedding Singer," getting singing lessons from Sandler's character Robbie Hart. She performed "Til There Was You" for her husband at their wedding anniversary, before taking on the Sugarhill Gang's hip-hop classic "Rapper's Delight."

"The Wedding Singer" soundtrack even featured her version, credited to both The Sugarhill Gang and Ellen Dow. According to TMZ, the track made the top 5 on the Billboard charts.

According to the Associated Press, Dow obtained a master's degree from Cornell University in 1935, when that was still a rarity for women.