I always love seeing who gets picked. So far a few have been announced:
France - Laura Flessel (Fencing)
Italy - Valentina Vezzali (Fencing)
Serbia - Novak Djokovic (Tennis)
Spain - Rafael Nadal (Tennis)
Not surprised to see Nole and Rafa be flagbearers; they are already legends in their sports and Olympic medalists.
I don't know a thing about fencing, though.
Any suggestions as to who could be flag bearers for other countries?