This is the criteria I used:
1. Feature film debut in year 2000 or more recent
2. Have currently rated 5 or more titles they are in
Martin Freeman 76.80 average rating/5 films - favorite movie The Hobbit: An Unexpected Journey
Idris Elba 71.60/5 - Thor: The Dark World
Jamie Bell 70.86/7 - Snowpiercer
Kerry Washington 70.40/5 - Django Unchained
Michelle Rodriguez 69.00/6 - Resident Evil
Michael Pitt 66.67/6 - The Dreamers
Dominic Cooper 66.40/5 - The Escapist
Chris Evans 66.11/9 - Snowpiercer
Jay Hernandez 65.80/5 - Hostel
Zack Galifianakis 62.40/5 - Muppets Most Wanted
I do consider most of these quite good actors, and then some happen to be on films I enjoyed.
Cheers