If you just can't shake the fantasy football bug yet (and after what Larry Johnson did to your team this year, why can't you?) there are a handful of fantasy games based around the NFL playoffs that'll at least carry your obsession into the new year.

Most of the games are similar to the standard weekly salary cap games run by Yahoo and CBS during the regular season, but with the added twist of locking in your roster for two weeks in a row. It forces you to balance big performers against players who'll stick around int he playoffs -- last year, nearly everyone who took LaDanian Tomlinson got stuck when the Chargers were bounced early in the playoffs.

Here are a few links: 

NFL.com's Playoffs Challenge

CBS Sportsline's Playoff Challenge

The Sporting News' Three for All and Football Playoffs games

All of them require registration with their site, but none of them have any fees. And some of them have cash prizes if you're really, really lucky.

Anybody else know of good post-season games out there?