She wasted no time cashing in on her new name and pulled a Jessica Chastain in 1998 except, but with all leading parts. Hush is a bit embarassing, really, but she is excellent in A Perfect Murder, Sliding Doors is highly entertaining and just a bit brainy, she's fairly smashing in Great Expectations and, of course, Shakespeare in Love won her the Oscar which, all things (Cate Blanchett) considered, it is hard to begrudge her.
She's done plenty of great work since - Royal Tenenbaums, The Talented Mr Ripley, Possession, Sylvia, Two Lovers, even Duets - but is frankly underappreciated.
All her 1998 roles below:
Hush - what rubbish:
A Perfect Murder:
Shakespeare in Love: