Alien: Covenant was a nearly-perfect horror movie, IMO. Nice setup; didn't beat you over the head with any of the thematic elements; let the idea of the "unknown" really fester and then take over; just enough chaos to make you feel mentally strained along with the characters. Even being familiar with the other films (particularly Prometheus), they did enough to make it stand alone as a horror movie. I thought it was fantastic.
Tom Cruise's The Mummy: I honestly did not think it was nearly as bad as the reviews and audiences made it seem. I think it was a mixture of people getting their hopes up for a modern reboot of the Brenden Frasier story they know and love, combined with the fact that it lacked any actual "Egypt" stuff aside from the tomb (which was not in Egypt).
I think they handled the introduction to the expanded "Dark Universe" in a clumsy way and kind of beat the audience over the head with it, and having Russell Crowe go off the rails as Dr. Jekyll/Mr. Hyde in a movie not dedicated to him or a full crossover was dumb, but I enjoyed the film otherwise. The mythos they were building seemed neat, despite doing too much to tie it into the film's plot.
Overall, I was entertained for the duration of the movie, and was impressed by the unexpected creepiness of certain parts. I was left curious as to what Cruise's character had in store for himself moving forward, but it appears the franchise and the expanded "Dark Universe" were both killed by a poor box office, and that bums me out. I actually thought there was great entertainment potential there, even if there were some really poorly done aspects (they fly a sarcophagus out of a tomb by tying it to a helicopter. They show the helicopter flying with the sarcophagus dangling below, twisting every which way and even doing some slight tumbling. They set the sarcophagus down, secure it to a pallet with chains and rope, and carefully slide it into an AC-130... it is at THIS POINT that the Egyptologist lady freaks out and tells the soldiers to be very careful. Wut.)