31.3 GB
the only games i have are Ruse free weekend, portal, team fortress 2, garrys mod and some addons for various different games...
I think mine's around 20 gb.
I love real life copies.
51,5 gb
I thought it was much less :o
101gb, I have a lot of mods installed.
[IMG]http://i156.photobucket.com/albums/t33/KEITH1437/steamapps.jpg[/IMG]
16 of my 87 games aren't installed. I deleted them because they took up space I could use for more appropriate things. So rough estimate of all games, probably about 300gb.