In a large bowl, combine eggs, onion, pepper, mustard, Worcestershire sauce, cracker crumbs, mayo and salt and pepper.
Gently fold in crab meat until it is all incorporated. Try not to break up the pieces of crab too much.
Form mixture into 8 equal size cakes. At this point I like to refrigerate them for an hour or so, but it's not necessary.
Melt butter in skillet and cook crab cakes over medium-low heat until golden and heated through. Serve with your favorite sauce.