Crazy.  I used to be all obsessed with Steam, especially the sales.  If there was a potentially good game on sale for a few dollars, I would pick it up.  My Steam game collection is over 100 deep now.  Games that have lately been on sale I've passed on because of Starcraft. 
 
But now, since Starcraft 2 came out, I haven't even booted up Steam except for to find people to play Starcraft with.  The way things are going, I don't think my Starcraft 2 addiction will be slowing down any time soon.  Oh well.  I don't mind.