Much like Hamzakah, the Serious Sam games don't have to make any sense to be awesome; they just are for reasons beyond our understanding.
From now until February 19, GameTap is giving everyone a free round of Serious Sam II. Yup, that's pretty much it. Consider this post a public service announcement of sorts, minus the real American heroes.
I know more than a few of you have expressed your interest in the Serious Sam series lately, and while it's not another sequel (which apparently is being worked on? hell yes!), free games are pretty nifty too.