Enjoyable on several levels, "Sibling Rivalry" is the type of black comedy that can withstand the test of time. In other words the lively script will never seem dated. The cast is uniformly excellent, and the dark subject (adultery caused death cover-up) is terrific material for this type of comedy. Bill Pullman absolutely steals the movie with a character similar to the one he played in "Ruthless People" If you enjoy dark comedy then this is a must see. Carl Reiner has come through with another winner that is perhaps under the radar, but deserves to be seen. It will definitely hold up to multiple viewings, which is only one sign of "Sibling Rivalry"'s excellence. - MERK

If this movie had stuck with its black comedy premise all the way to the end it might have been a memorable film, as. e.g., the later "War of the Roses." As it is there is some marvellously funny dialogue in the first 2/3 of the movie, as well as some hilarious slapstick in the hotel room when Allie's and Pullman's characters are deciding how to deal with the corpse. The portrayal of the husband's all-doctor family is pretty good, too. Unfortunately all of this is wasted in pursuit of the prized Happy Ending, wherein Marjorie's infidelities are seen as a stepping stone to a fuller relationship with her chastened husband. Puh-leez.

This movie reminded me a lot of "Arsenic and Old Lace." I don't really know why. Except for the dead body. I am a big fan the Carl Reiner and his son Rob Reiner.. I believe that their contribution to the America Cinema is incommensurable. Bill Pullman (Zero Effect) does a wonderful job playing really clumsy people. Carrie Fisher (Sleepless in Seattle) is great playing the snobbish pain in the neck sister in law. The script is funny! I ran into this movie by coincidence. One of those on sale type things and I found a great little funny movie. I recommend it!