Mourning Becomes Electra is truly outstanding. It is a remarkable work that showcases the genius of Eugene O'Neill. The play delves deep into the complex emotions and psychological turmoil of its characters, exploring themes of love, hate, revenge, and guilt. The story is filled with intense drama and powerful performances that keep the audience on the edge of their seats.

However, it must be said that everything O'Neill wrote is a classic. His body of work is a testament to his incredible talent and vision as a playwright. Each of his plays is unique, yet they all share a common thread of depth, complexity, and emotional resonance. From the tragicomedy of Long Day's Journey into Night to the epic scale of The Iceman Cometh, O'Neill's plays continue to captivate audiences and inspire generations of playwrights.

In conclusion, while Mourning Becomes Electra is an outstanding play, it is just one example of O'Neill's remarkable talent. His works are a treasure trove of literary and theatrical excellence that will continue to be studied, performed, and enjoyed for years to come.