I decided to give this one I try even though I refuse to think of others than the originals
Cast:
Brandon- Jim Sturgess or Milo Ventimiglia...maybe even Tobey Maguire, he looks young enough to me
Dylan- Joe Anderson.
Brenda- Natalie Portman or Leighton Meester. (I also thought of the perfect Mexican actress but nobody would know who I'm talking about, LOL.)
Steve- Adam Garcia.
Kelly- Evan Rachel Wood or Julia Stiles.
Donna- Ellen Page.
David- Gregory Smith (I agree with Ruby here). Maybe Shia LaBeouf too.
Andrea- Hayden Panettiere.
Ok, that was hard to choose, hehe...but fun in the end