If you didn't like PI, it's quite possible you wouldn't like PRIMER, either; it's certainly not for everyone. But my wife and I both thought it was terrific, and I bought the DVD for a day we can set aside to watching the movie several times. It's extremely intricate and thoroughly thought-out, bending time several different directions--most of which the central characters are never aware of, even while they're living through the altered events, and even unaware of their own alterations.