The OSCARs are overrated and don't really award the best. They are too biased, and utmostly they give awards to movies/people who have been around long enough.
ex:
LotR - the last one of the series, so why not just give it all to it? Since it didn't win in previous years.
best movie should have been Mystic River, or maybe City of God (I'm Brazilian, what do you expect?!
).
and about best actress, the trend is: The uglier you can get, the more chances of winning you have
I have much more respect for the Cannes awards, and also the Silver Bear (I think).