This tutorial will show you how to skip the annoying/time-consuming 'Valve Intro'
You know, The video of that guy with a Valve/Tap on his head.
Open Steam, Right click on 'Team Fortress 2' and click 'Properties'
Click on 'Set launch Options...'
In the box that comes up, Type '-novid' (without the 's)
Click OK and close down all of the windows.
The Intro video will now stop playing when you launch TF2.