"Ranking the Most Underrated Superhero Movie Performances, Including J.K. Simmons' Stunning Roles"
J.K. Simmons, a versatile actor known for his unforgettable performances, has portrayed a wide range of characters throughout his career. Some of his most notable roles include Mac MacGuff in Juno, Omni-Man in the Invincible TV series, a CIA Superior in Burn After Reading, J. Jonah Jameson in Sam Raimi's Spider-Man Trilogy, and Terence Fletcher in Whiplash, which is considered his most intense and memorable performance.