Here's my list for best actor. Once again, they are mostly coming from the shows I watch and who I've seen in the last few years. Some I've seen longer than others. This list was actually harder to rank than my best actress list.
John Aniston
Trevor St. John
Tuc Watkins
Maurice Bernard
Phil Carey
Robert S. Woods
Peter Reckell
Steve Burton
Drake Hoygstan
Rick Hearst
Joseph Mascolo
Brett Claywell
Anthony Geary
Brandon Beemer
Shawn Cristian
Scott Evans
Mark Lawson
Eric Martsoff
Scott Cliffton
Michael Easton
David Fumero
Rosco Born
John-Paul Lavoiser
Brandon Barash
John Ingle
John Aniston
Trevor St. John
Tuc Watkins
Maurice Bernard
Phil Carey
Robert S. Woods
Peter Reckell
Steve Burton
Drake Hoygstan
Rick Hearst
Joseph Mascolo
Brett Claywell
Anthony Geary
Brandon Beemer
Shawn Cristian
Scott Evans
Mark Lawson
Eric Martsoff
Scott Cliffton
Michael Easton
David Fumero
Rosco Born
John-Paul Lavoiser
Brandon Barash
John Ingle