What are some universally acclaimed graphic novels considered among the best comics of all time?

Among the most lauded graphic novels frequently cited as the best comics of all time are 'Watchmen' by Alan Moore and Dave Gibbons for its deconstruction of the superhero genre, 'The Dark Knight Returns' by Frank Miller for its gritty portrayal of Batman, and 'Maus' by Art Spiegelman, a powerful Holocaust memoir that won a Pulitzer Prize. Other perennial favorites include 'Sandman' by Neil Gaiman, known for its intricate storytelling and mythological themes, and 'Persepolis' by Marjane Satrapi, a coming-of-age story set against the Iranian Revolution.