I have spent the day with a friend and her two boys (8&10). TBH, it wasn't a great day and some of her boys' behaviour was a bit trying, with lots of wining and "I wants".
Something that surprised me was that they were quite unpleasant to my two (6&4), as they wanted to play Power Rangers. The 8yo thought this was babyish (actually said "gay" ). Now, I have only just given in and allowed mine to watch it at all, thinking it was too violent, can they really be too old for it at 8? What do 8yo's watch - do I really want to know?