i just pre ordered portal 2 on steam for a small discount, and it included a copy of the original 'fo free. just FYI for anyone who is interested. i thought the 1st portal was a pretty fantastic game. the gameplay was fun and unique, and the story was refreshingly good. i definitely recommend.
http://store.steampowered.com/app/620/
http://store.steampowered.com/app/620/