My strategy here is to ask the server what their favorite thing is, or what they recommend. I usually go with the first or second thing they say. My experience choosing for myself has been horrible-- a frybread "taco" the size of a small child filled with the blandest beans/lettuce/tomato possible, and one other dish I repressed the memory of. Their chocolate shake, meatloaf, and mac-n-cheese, however, was fine when ordered as the server suggested (each ingredient by itself would be pretty tasteless, so usually this involves all the fixins.) There are also items apparently not on the menu. One recurring problem also seems to be excess salt.
For late night service, though, I *think* it's better than Denny's...