It seems silly to create a new thread every time we find a new J Crew $20 off $80 coupon code, so I'll just keep adding them here.
J Crew Coupons:
SALEFUN - Extra 40 - 50% Off Final Sale Items (Exp. 7/22)
J. Crew Factory Coupons:
EXTRA50 - 50% Off Clearance Items (Exp. 7/20)
Don't forget to place your order on the "catalog phone" available in most J Crew b&m's to get free shipping too.