Frog God Games (and Erik Tenkar) have created a system called Swords & Wizardry Light. It's a whole game in 4 pages. Seriously, check it out HERE. It's free gaming goodness.
S&WL is getting tons of support too. Tenkar's Tavern is planning a 'zine. I even threw a 1 page adventure toward it. Frog God is working on Tome of Horrors for Light. They are even making Character Cards. Some guy named Mike down in Texas has even started a Society, called Swords & Wizardry Legion.
If you are looking for an streamlined, fun, game with easy to learn rules, check out S&WL. Bring a couple of old friends back to the table with it.