Shia Lebouf barely achieves "good", much less great. A young actor I think has potential to evolve into great is Chloe Grace Moretz. Seen lots of range in her different roles.
let me in (or let the right one in) was such a great movie, both the english and swedish versions. such a difficult role for the boy and girl actors. she did incredibly well with it. i did a quick image search for her just to see if she was who i was thinking of and the pics from now make her look quite a bit different from that role. i barely recognized her.