Honestly, Steak and Shake is one of the more pleasant fast food restaurants I've been too.
The food is cheap. The food is (for the most part) really good. I suggest staying with the burgers and shakes, although their chili is probably the best I've had in Bloomington. Use their coupons! They distribute them in the mail every two weeks or so.
The sit down service is awesome. The staff at this particular S&S are really nice, even though they're young and probably inexperienced. They aren't overly pushy--they usually are good for small chit-chat (I usually go later in the evening, so it may be different during peak hours).
At this location, I have yet to have a bad meal. The management seems to really have control of the restaurant and it is running all-cylinders! If you ask me, go for the Steak and Shake meal, burger with everything, chili deluxe (with onions and cheese), fries, and any flavor of Shake--with the coupon, it comes out to ~8 bux. Seriously, McDonalds for that much food would be more expensive and it would taste so much worse.
Oh--and the best part about this location. 24 hours. It's a really fun place to go from 12-2am!