Computer:
Logitech Z2300 2.1 system, 200 watts (for about $140 on sale!)
TV:
-Upstairs = Older Kenwood component system, unknown wattage, hooked up to 2 3-way speakers. However many watts, it's enough to produce rattles throughout the house.
-Downstairs = 2 crappy, small speakers hooked directly into TV, sounds only slightly better than TV. Currently searching for cheap (used) reciever and speakers.
Also have a 240 Watt Sony minisystem in my room, and brother has kick-ass system comprised of an older reciever, a DVD player, and half a dozen assorted speakers (most of which are not his), including an old set of Toshiba speakers with MTX Thunderpro's (10's) hidden behind the covers.