the worst cinema motion picture release of all time, released in 1990. The storyline and plot are badly written, the acting is crummy to the hilt, the comedic elements and jokes are a bit on the sadistic nature - hell, even the obligitory sex scene is so phony you won't believe the directors and producers put it in like they did. It stars Kirstie Alley who was then starring in the cool TV series Cheers.
Don't waste your time with seeing Sibling Rivalry. It's absolutely depressing that this shit was actually promoted and advertised as a comedy.