can you name some of his notable writings?
Two of his well known poems are "O Captain! My Captain!" and "When Lilacs Last in the Dooryard Bloom'd".
Walt Whitman
Two of his well known poems, "O Captain! My Captain!" and "When Lilacs Last in the Dooryard Bloom'd", were written on the death of Abraham Lincoln. 
who did gus kill with a box cutter Gus slices his loyal henchman Victor's throat with a utility knife. what does this cutter refers to? It is the fourth season premiere of the American television drama series "Breaking Bad". who directed this season? Adam Bernstein what are the characters of the above tv series? "Walter White”, "Jesse Pinkman” and "Gus Fring” are some of them. from where has its concept developed? The concept emerged as Gilligan talked with his fellow "X-Files" writer Thomas Schnauz regarding their current unemployment and joked that the solution was for them to put a "meth lab in the back of an RV and drive around the country cooking meth and making money". who acted out the first mentioned character from the list you mentioned? Bryan Cranston and the third one? Giancarlo Esposito how is whitman connected to this show? Walter White's name shared the same initials as Walt Whitman. is there a fan made film on this? Yes, French editors Lucas Stoll and Gaylor Morestin created a fan edit, simply titled "Breaking Bad: The Movie", condensing the entire series into a two-hour feature film and uploaded it onto Vimeo. what is the storyline of this series? It tells the story of Walter White, an underpaid and dispirited high school chemistry teacher who is struggling with a recent diagnosis of stage-three lung cancer. White turns to a life of crime, partnering with his former student Jesse Pinkman, by producing and distributing crystallized methamphetamine to secure his family's financial future before he dies, while navigating the dangers of the criminal underworld. the protagonist shares name initials with a particular person you said above; what is that person's profession? Walt Whitman was an American poet, essayist, and journalist.
wiki:19584846
Walt Whitman [SEP] Introduction
After a stroke towards the end of his life, Whitman moved to Camden, New Jersey, where his health further declined. When he died at age 72, his funeral was a public event. Whitman's influence on poetry remains strong. Mary Whitall Smith Costelloe argued: "You cannot really understand America without Walt Whitman, without "Leaves of Grass" ... He has expressed that civilization, 'up to date,' as he would say, and no student of the philosophy of history can do without him." Modernist poet Ezra Pound called Whitman "America's poet ... He "is" America."