Tossup between "Win Contra 4 for the DS!" because technically it's the post which first got me to visit the blog, and the Mass Effect video because it's a cool idea and because of the helping hand it offers to video-clueless Mac users. I had the plugin already, but it's always reassuring to see Mac ambassadorship on websites that aren't directly related to Macs.
I played my friend's copy of Contra 4 for a few minutes. It satisfied my urge for a taste of that sweet wall-punching gaming frustration nectar I've been missing for the last 10+ years. I want more. Give me this game for free, I command thee.