Maybe not the best, but certainly good:

THE WORLD, the showgirl searching for a band-aid.

THIS MAN MUST DIE, a young boy plays at the sea shore and a speeding car in the countryside..

TEN DAY'S WONDER, a man wakes up, covered in blood

BETTY, she merely walks into a bar.

LA BELLE HISTOIRE, Paris seen through time lapse accompanied by Brel's "La valse mille temps" 

IN THE NAME OF THE FATHER, the opening sequence is like 10CC's of adreniline

Dazzling openings (that didn't hold up)

WIT, Emma thompson zoning out in the Doctor's office--whoa, wait a minute, did he just say "cancer?"

BIRTH, the jogger in central park.