Ok -
Major food stores using underhand tactics to temporarily boost sales
Clothes stores using sex in advertising (year round)
Retail stores with sales assistants that are trained to increase the amount customers spend, regardless of needs
Banks that employ people to use cold-calling to boost sales, and lying to the customer about the purpose of the call
Used car salesmen that deliberately neglect to mention problems with cars
Supermarkets forcing down the price from suppliers by way of their position
Newspapers reporting stories with sketchy facts just to boost sales
Sports goods firms allowing abuse to continue by their suppliers (Nike etc…)
Medical establishments providing contraception, abortion, and even sexual health care to people in pornography
Electronic goods makers putting out products with slight defects, and not properly testing them (Apple with the recent iMac/iTouch)
Professional Accounting Firms with nights out getting drunk to increase team bonding (i.e good luck getting a promotion if you are not willing to join them), in addition to doing accounts for immoral businesses (abortion, strip clubs, sex shops)
Manufacturing firms using cheaper, but dangerous raw materials (Mattel)
Supermarkets collaborating to price fix ( + general occurrence of this phenomenon)
Small building firms who do a number of shoddy jobs, close down the business, and open up under a new name.
Outsourcing of call centres, when the new recruits in India / South Africa / Other have no idea how to deal with complex enquiries and refuse to put one through to a manager.
Using fear to sell insurance.
Food manufacturers using deceptive sized boxes, and immoral advertising
This list is endless!