It's one of my favorite movies. Even knowing it beat by beat, I enjoy watching it because it is so well told. Even the narrative structure feels integral to how Nolan wants the story told. So it doesn't feel as "gimmicky" as it could be.

It also gives a nice twist on a noir murder mystery. Because the story starts with a murder, then instead of making us guess who did it, it makes us figure out why he did it. With every step giving another piece to that puzzle. So the mystery unfolds linearly while the narrative goes both backwards and forwards to meet back at the beginning of the movie.

While I haven't watched Dunkirk or Tenet yet, Memento remains my favorite Christopher Nolan film.