This has always bothered me. =P
In the valley scene towards the end of the movie when Kiara is in trouble, why is Kovu not doing anything? It always struck me as completely wrong that Simba was the one to rescue her. I think it was trying to show reconciliation between Simba and Kiara, but it came at the cost of complete OOCness from Kovu who sat on the sidelines and waited for the lioness he loved and lived for to be rescued. This bother anybody else?