There are really only a couple of games to keep an eye on tonight involving the Clippers playoff rivals.
The Warriors are in Memphis to play the Grizzlies. Golden State is tanking it's way through the end of the season, so we probably can't expect a lot of help there. Memphis has the easiest schedule of the teams near the Clippers in the standings, so they may be the biggest threat. However, they are in the middle of a back-to-back-to-back. They should be pretty worn out when they get to Dallas tomorrow.
The big one, once again, is the Lakers game. The Lakers are hosting the Nets tonight, and word is that Andrew Bynum will sit out tonight to rest his sprained ankle. I would be shocked if he didn't play tomorrow night against the Clippers though. The Nets have one three straight, and the Lakers have been far from sharp recently, so it's certainly possible that New Jersey could pull it off. I know that there will be many citizens pulling for them. If the Lakers win tonight, they'll retain the Division lead, regardless of the outcome of tomorrow night's L.A. showdown (though the Clippers will could catch them in the loss column with a win). If the Nets can pull off the upset tonight, then the winner tomorrow night will be alone in first place in the Pacific Division.