Actor:
1. Denzel Wasington
2. Denzel Washington
3. Have I mentioned Denzel yet?
There are also absolute favorites like Nic Cage, Al Pacino, RDJ, and Christoph Waltz.
Honorable mentions that are all kinds of random: Tom Cruise, Matt Damon, Jim Carrey, Leonardo DiCaprio, Tom Hanks, Robin Williams, Robert DeNiro, Jonah Hill....
Actress:
1. Sandra Bullock
And then there are Angelina Jolie, Jodie Foster, ScarJo, Zoe Saldana, Charlize Theron, Amy Adams, Rachel McAdams, etc...