I really dont understand all the hate for Nemesis. It was a flawed film...VERY flawed, but the worst Trek movie ever? Not by a longshot.
Many people complain about the plot holes, but EVERY Trek movie has plot holes. Hell, the new movie (which I loved, BTW), has plot holes big enough to drive a dozen starships through.
I think Nemesis had the potential to be the best of the TNG movies. A better director and a rewrite of the script would have helped, but you've gotta judge a movie based on what it was, not what it could have been.