I’m not sure the 90’s is the best decade for movies but it is certainly consistent! Without any padding to make up the numbers every year of the decade has at least five great films to be in contention.
1990: Nikita, Wild at Heart, Henry: Portrait of a Serial Killer, Miller’s Crossing, Tie Me Up! Tie Me Down!
1991: Point Break, The Silence of the Lambs, Terminator 2: Judgment Day, Cape Fear, Delicatessen
1992: Reservoir Dogs, Unforgiven, Batman Returns, Army of Darkness, Hard Boiled 
1993: Army of Darkness, Three Colours: Blue, Schindler’s List, Dazed and Confused, True Romance
1994: Pulp Fiction, The Shawshank Redemption, Leon, Three Colours: Red, Ed Wood
1995: Heat, Se7en, Twelve Monkeys, Before Sunrise, The City of Lost Children
1996: Bound, Crash, The English Patient, Pusher, Romeo + Juliet
1997: L.A. Confidential, Jackie Brown, The Ice Storm (forget Wushu and gay cowboys, this is Ang Lee‘s best film), Cube, The Fifth Element
1998: Saving Private Ryan, Run Lola Run, Blade, The Big Lebowski, American History X
1999: Fight Club, The Matrix, Go, Eyes Wide Shut, The Straight Story
Completely agree on Ice Storm. His very best work and a standout title from a great year.
Great movie year contenders, Andy! Lots to choose from…
I will say that My Movie Year is from the 90s.