I was underwhelmed...
The good points: The movie was never boring. Good, passionate performances by Peter O'Toole and Anthony Hopkins. Some of the dialogue was snappy.
Otherwise, I thought this movie was too much of one thing and not enough of another. Every five seconds, any two character go from love and devotion to hate and betrayal. Every five seconds, this movie has a climax! I couldn't keep up! And it just made me think that the writer wasn't serious in the least when he wrote this play. At least "Who's Afraid of Virginia Woolf?" (another play I might call "thin") had one central thing to bring everything to a climax, their "dead son", something for the writer to focus on. But in this movie there was so much yelling and going around in circles, it was really like any daytime soap opera. It ended up being somewhat meaningless to me.
The only part that moved me was when Richard/Hopkins said to his father "You never called my name. I would have walked, crawled..." I thought that part was touching, and he and O'Toole were the only ones who acted with any passion, IMO. I thought Katharine Hepburn's performance was almost schtick. She bored me.
I didn't hate this movie, but it seemed like the writer thought he was more clever than he was. There was zero emotional subtext in the film, even though it seemed to see itself otherwise. That is, unless, this movie was intended to be tongue-in-cheek, which is entirely possible.