Here's my ranking:
1. 2012 - Vidya, Kahaani
2. 2011 - Vidya, TDP (Extraordinary performances, these 2 are a cut above the rest, and cannot really be compared with the others)
3. 2000 - Karishma, Fiza (Don't like Karishma, but she was solid in this role)
4. 1998 - Kajol, KKHH (She turned a simplistic character into something iconic, one of the few performances of Kajol that I actually liked)
5. 2007 - Kareeena, JWM (Same as above, simplistic role but iconic performance)
6. 2009 - Vidya, Paa (She was good in it, though I preferred Kareena in Kurbaan)
7. 2006 - Kajol, Fanaa (This is the only role of Kajol I liked post 2000, but the other nominees were better)
8. 2008 - Priyanka, Fashion (not a fan of this performance but she was pretty decent in it)
9. 2004 - Rani, HT (Good performance, but not an award worthy one, especially in such a strong year)
10. 1999 - Ash, HDDCS (Decent performance, one of her better ones)
11. 2003 - PZ, KHNH (Strictly average performance, but got lucky as the role was well-written and the film was a good one)
12. 2005 - Rani, Black (Yeah I can see why it is considered a path-breaking role, still don't think of it as a good/convincing one though)
13. 2002 - Ash, Devdas (Pretty average work, looked lifeless and artificial in most scenes)
14. 2001 - Kajol, K3G (While technically a good performance in the ott-comedy genre, it's not an award worthy one)
15. 2010 - Kajol, MNIK (By far the worst winner -- she was mediocre throughout the whole film except for the scene where she finds out her son died, in that scene she was terrible and deserving of a Razzie award)
27