I don't get to this Big Boy often (mostly because I live in TEXAS), but whenever I make a trip home to Manistee, I have to visit the Big Boy.
The Slim Jim sandwich is my all-time favorite. It's thin slices of ham and swiss cheese on a hoagie roll with lettuce, onions and tomato. This has been my favorite menu item for as long as I can remember.
They also have a HUGE breakfast buffet. My parents took us there on my last trip home. I don't know what it is about the sausage links, but you just can't get that kind down here.
I recommend this place for a great family dinner at a reasonable price.