I was just looking over the log of 1990 films I have seen for Tyler's poll about ranking Meryl Streep, and I was struck yet again by the idea that 1990 was a very good year for supporting actresses. Many fine performances were given. Here are some of my favorites alphabetically (some giving good work in more than one film) I also made an attempt to include people who even in a minute or two of film made an impression.:
Annette Bening/Postcards from the Edge & The Grifters
Helena Bonham Carter/Hamlet
Lorainne Bracco/GoodFellas
Glenn Close/Reversal of Fortune & Hamlet
Joan Cusack/Men Don't Leave
Blythe Danner/Mr. and Mrs. Bridge
Carolyn Farina/Metropolitan
Bridget Fonda/The Godfather Part III
Whoopi Goldberg/The Long Walk Home & Ghost
Marcia Gay Harden/Miller's Crossing
Jane Horrocks/Life is Sweet
Julie Kavner/Awakenings
Diane Keaton/The Godfather Part III
Shirley MacLaine/Postcards from the Edge
Mary McDonnell/Dances with Wolves
Laurie Metcalf/Internal Affairs
Catherine O'Hara/Home Alone
Martha Plimpton/Stanley and Iris
Joan Plowright/Avalon & i Love You to Death (as I'm watching it now)
Pamela Reed/Kindergarten Cop
Talia Shire/The Godfather part III
Claire Skinner/Life is Sweet
Mary Steenburgen/Back to the Future Part III
Mai Zetterling/The Witches
And I still have Diane Ladd in Wild at Heart to look forward to in the future!

Who are some of your favorites?