KimC, there's quite a few in the character actress section, just as there's quite a few ugly men in the character actor section. You won't find ugly blockbuster-movie-stars of either gender, unless (a) they're the baddies, or (b) they're adding "character".

As for non-good-looking actresses: Meryl Streep? And I've never liked Jodie Foster either.

Grab.