It was an extremely silly movie but fun. Particularly since he despised his sister-in-law and sued to have his nephew removed from her influence.
Did you think the portrayal of Beethoven was silly? I thought it was right on. And Gary Oldman was brilliant. While the mystery of who was "immortal beloved" was "solved" by the writer/director Bernard Rose, he did a lot of research and maintains that his conclusion is the most likely answer.