Adam Baldwin is not one of the Baldwin brothers.  We repeated, Adam Baldwin is not a Baldwin brother!  What Adam Baldwin is is a popular film and television actor probably best known for his roles in Full Metal Jacket, My Bodyguard, and the X-Files.  Joss Whedon nuts probably best know Baldwin for his roles in Angel and Firefly.

Now nerds everywhere know Adam Baldwin for his amazing performance as Major John Casey on NBC's Chuck.