After 6 years of attending fan events, there are too many actors to list and I'll probably forget some but I'll type up a short list.
DOOL
Kyle Lowder (NJ event 2001)
Adrianne Zucker (NJ event 2001)
Kevin Spiritas (Michigan 2004)
AMC
J. Eddie Peck (NJ event 2001)
Cameron Mathison (NJ event 2001)
Vincent Irizarry (Washington, DC in 2004)
OLTL
Kamar De Los Reyes (NJ event 2001, 2002)
David Fumero (NJ event 2001, 2002)
Michael Easton (NJ event 2003)
Guiding Light
Brian Gaskill (NJ event 2003)
General Hospital
Greg Vaughan (Toronto with Chad Brannon 2003, NYC 2005, Long Island with Rick Hearst in 2005, 2006, GHFCW 2003, 2004, 2005, 2006, 2007, Bethesda MD 2006)
Steve Burton (First time Chicago event in 2002, GHFCW 2003, 2004, Long Island, NY 2004)
Rick Hearst (NYC 2005, Long Island, NY 2004, 2005, 2006, GHFCW 2003, 2004, 2005, 2006, 2007, Pittsburgh 2006, NJ 2006, Bethesda MD 2006)
Tyler Christopher (Pittsburgh 2006, NJ with Steve 2004, GHFCW 2003, 2004, 2005, 2006, 2007)
Nancy Lee Grahn (NYC 2005, GHFCW 2003, 2004, 2005, 2006)
Ted King (NYC 2005, GHFCW 2003, 2004, 2005, 2006, Bethesda MD 2006)
Becky Herbst (NY/NJ 2006, GHFCW 2003, 2004, 2005)
Chad Brannon (met 27 times - too many to list 2001-2005 First time was in Harrisburg, PA in 2001)
Sean Kanan (Michigan 2004, GHFCW 2005)
Brian Presley (Long Island with Steve Burton 2004)
Stephen Martines (Coltin Scott) (NJ 2002, 2003, 2004)
Corbin Bernsen (FCW 2005)
Wally Kurth (North Carolina 2002 with Chad, GHFCW 2003, 2004, 2005, 2006, 2007)
Tamara Braun (NJ with Rick Hearst 2004, 2005, GHFCW 2003, 2004, Michigan 2004)
Sarah Brown (GHFCW 2003)
Plus GHFCW 2003, 2004, 2005, 2006, 2007 when I met most of the cast of General Hospital. I've also had a tour of the GH set in 2005, and lunch with Rick Hearst and Greg Vaughan in 2006.
I could be off on the years, it's been a while.

Photos of the events can be found here -
http://community.web...hadbrannonfan89