Real world article
(written from a production point of view)
Todd Merrill is the actor who portrayed Gleason in the Star Trek: The Next Generation fourth season episodes "The Best of Both Worlds, Part II" and "Future Imperfect".
Merrill guest-starred in a 1989 episode of Quantum Leap, starring Scott Bakula and Dean Stockwell. He went on to appear in The Invaders, 1995, also starring Scott Bakula).
He appeared in a 2003 television special called Return to the Batcave: The Misadventures of Adam and Burt. Fellow Star Trek alumni Ivar Brogger, Ray Buktenica, Christopher Darga, Frank Gorshin, James W. Jansen, Jason Marsden, Lee Meriwether, Julie Newmar, Julia Rose, Joel Swetow, and Steve Vinovich also had roles in this special.