I think one of the most underrated actresses is Lalaine vergara-Paras. She has been in Lizzie Mcguire with Hilary Duff and also in the disney channel film 'You Wish'. She is a very talented actress and singer (Not to mention very beautiful aswell) and unfortunately for her i think Hilary stole the limelight of what Lalaine deserves. I just hope she can shine through and get the praise she deserves now that Lizzie Mcguire is finished.
Milla Jovovich (coming out in Resident Evil 2. check out the trailer at www.budweiser.com/1). She's awesome.
I was just about to start a similar thread like this but I did a search first. Can't believe I'm resurrecting a 2 yr old thread but anyways, here goeseth.....
Jeremy Davies - is an extremely underrated actor. I've loved all the roles he's played. Definitely has a good deal of range.
Forrest Whitaker - is another actor I feel is extremely underrated and under appreciated.
Hill Harper - he's another one that no one seems to acknowledge.
Laura Linney - Always gives top performance in every movie I've ever seen her do and yet I never see her get any recognition for it.