What I do on my PC:
Gaming (wow, newer mmo's, COD, Battlefields)
Multi-task to a great deal
streaming videos
Expandability
Monitor: http://www.newegg.co...N82E16824254044
Ram: http://www.newegg.co...N82E16820231277
HD: http://www.newegg.co...N82E16822136284
Graphics: http://www.newegg.co...N82E16814102873
Processor: http://www.newegg.co...N82E16819103808
Motherboard: http://www.newegg.co...N82E16813131402
tower: http://www.newegg.co...x...342876&SID=
PSU: http://www.newegg.co...x...342876&SID=