There’s a Five Day Frag Fest Sale at OnLive and OnLive UK.
"Thursday through Monday we’re saying THANKS with free play on Homefront and Red Faction: Armageddon, plus deals on dozens of titles. New buyers can also get their first game for $1 or £1 while supplies last! Also, stay tuned for daily deals! US event starts at 7pm EST & UK event starts at midnight GMT."
nLive is a cloud gaming service. This would be a great chance to try out their service. You might be able to beat the games before the weekend is over.
I love the OnLive service. I use it to try out games before I buy them all the time instead of downloading a demo.