Pathfinder
I was pretty stoked to see that Paizo Publishing has put out a free copy of their Pathfinder RPG. It’s based off of the D&D 3.5 ruleset and will work at keeping some compatibility with D&D 3.5 in the midst of D&D 4 coming out. Yeah, it’s a wait and see kind of thing right now, but Pathfinder looks good. It looks like they are trying to smooth out some of those kinks in D&D 3.5 and make characters a little more powerful.
Early bonuses in the rules: different experience level ranges for slow or fast campaigns, 1st level characters that are a bit more dangerous, and easy skills. I dig it so far.
You can dowload a copy here: paizo.com/pathfinderRPG
Note: This site has been slow in starting up, but I’ll have more in a month or two.