Nothing wrong with 2 Channel!! A lot of listeners are still getting great results with simple systems, although multi channel has it's merits...
I get EXCELLENT results with my system:
Integrated amp
Floorstanding speakers
Apple MacBook Pro/Airport Express
DVD/CD player
Outboard DAC.
This system is simple, yet versatile: DVD/CD player and Airport Express each feed into the DAC, and the cable box is fed directly into the integrated.
Easy and affordable, yet serious resolution without compromising your music listening. For movies, the only missing component are the rear surrounds. Because of the speakers that I use, I don't need a center channel or sub, so it wouldn't be worth it for me to make the effort to add surrounds.
Visually the system fits easily into the space that my TV occupies, so no hulking components - I actually traded out my old MacIntosh gear for smaller chassis components...