Literally anything? Never let me go? The wizard of Earthsea? I have a hard time seeing how can anyone not agree with the parent's assessment. Foundation is interesting because of the idea/plot it presents. But the characters themselves bring little to the table. In a way the Foundation series is a good piece of conceptual art, but sci-fi novels.
I would argue that 1Q84 (don't read it!, it sucks) is the exact opposite. Interesting characters but lacking an overarching setting/plot.