Monk's is usually packed at lunch time with office workers and lawyers in search of Chicago's best hamburger, served all different ways. After work, it is less busy but the floor quickly becomes covered in peanut shells. I especially recommend the seasoned curly fries and the nachos. For dieters or Atkins-types, you can get your burger without a bun and with a small salad rather than fries. For downtown Chicago, the price is reasonable, but they only have free soda refills at lunch--after work, you have to pay for refills.