My 7 and 8 year old watched "Fly Away Home" last night, about a girl/dad helping orphaned Canadian geese to migrate using a homemade airplane. DS said afterwards how much he liked it. At the very beginning the girl's mother dies in an accident (which is implied more than shown) and there is a scene where a goose is hit by an airplane (the goose was Ok), but otherwise there wasn't anything too disturbing in it for a sensitive kid.
My kids aren't particularly sensitive so I haven't been too worried about it. Obviously, I wouldn't show them something that I knew was inappropriate or rated R at age 7-8. I will probably check some of the posted links from now on though.