Just noticed: if you're interested in getting both Portal-games, you can save $5 by downloading them separately instead of getting the Portal-bundle. The bundle still treats Portal like it needs to charge you for it.
Has Valve ever given away anything about Half-Life for free? I know they've gone very cheap before, but I can't recall free.
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http://img812.imageshack.us/img812/3492/eponaharr.jpg
Nominate E P O N A.