Gigabyte UD series motherboards
Radeon 79xx (fill in what you can afford) card.
Logitech / Microsoft/ cooler master mouse keyboard combos
Seagate barracuda / samsung spinpoint hdd.
Corsair Carbide Case. Any of them,just decide.
Roswill HIVE series, Corsair Enthusiast series, FSP RAIDER series, Seasonic S12II Series of power supply.