When I was younger my favorite actress was Whoopi Goldberg, just because I loved the movies she was in. But today I don't really have one that I would call my favorite, but if I had to choose one I would have to go with Tia Leoni. She was good in Deep Impact, Bad Boys 1 and Fun with Dick and Jane.
I would have to say Ziyi Zhang, she's been in movies such as, "Crouching Tiger Hidden Dragon", "House of Flying Daggars" and "Hero", her major role as the lead actress in "Memoirs of a Geisha" blew me away. Best actress who crossed over from fighting movies to a hard hitting romance blockbuster hit!
My favorite actress as to be Jennifer Lopez. Her part in Gigli was the best acting i've seen in ages........Just kidding. I have a hard time picking a good actress because in my mind there's no one that really stands out. But if I had to pick one then I'd chose Jennifer Connely for the amazing part she played in Blood Diamond. She played her part to perfection.