Coincidentally, my own use with each of the three platforms matches up pretty closely with the results of this survey.
I definitely spend more time watching media, both DD and disc based than playing games on the PS3, mainly because I spend more time watching media (often in the background) than actively playing games.
Barring a handful of DD based videos from XBL (episodes of The Guild and 360 game related video clips like the Alan Wake promos), the 360 is a game console first by a huge margin. I don't care for the way media play is set up on the Xbox so it's only for XBL exclusive content.
Since I don't have any strange compulsion to use the Wii for anything but games, it is used 100% of the time as a game console.
What those facts don't tell is that more games for the PS3 were bought than the 360 and Wii combined by a factor of almost two.
Barring any titles I forgot about (and and DD games), for 2010, it was PS3: 15 Xbox: 4 Wii: 4.
None of the games on the Wii bought this year were played for more than a few hours. Three of the games for the Xbox were finished completely. Same for the PS3 with a bunch that were basically just sampled to be played later.
