I love this feature. Since that I play GTA4 through Steam it's easier to find the 200 flying rats and 50 unique jumps since that I can just use the web and see where all of them are located. I know that you can go in a cafe in the game to find the locations, but this seems more convenient.

System Shock 2 was the only game that truly scared me, and I played it for the first time this summer. I guess that means is aged quite well :)