Who is the best actress?

This sounds like the ravings of a 'fan,' No Doubt?!? (That's not 'one who actually appreciates her work,' but rather 'one who appreciates that she's not too-punishing-to-look-at when she's on the screen). But I'll give you a chance to come back and state your stance ... To re-up your defenses & bring us to our senses ... ... sorry, bit of poetry ~ couldn't resist ... but anyway, Tell us what makes this "Aish!!" better than 'an actress who so embodies her roles that she is referred-to by-those roles instead of her actual name (as I might refer to Erica Durance as SMALLVILLE's Lois Lane, Beyond Sherwood Forest's Maid Marian & other roles I found through http://search.mylot.com/search.aspx?t=web&k=Erica+Durance)