Shaq to Cle: Even in the best of times Shaq's D was hit or miss. Now at age 37, the Cavs are bringing him in for the express purpose of playing defense. If Shaq were to fully commit to playing defense a la Wilt's commitment back in the day with the Lakers, Cle might have something, but Shaq's main thing has always been scoring. He uses defensive sequences to preserve energy. Best they can hope is that by having to defend Fatass, Dwight will get worn down or in foul trouble. These quick fix NBA personnel moves almost never work.
Vinsanity to Magic; If they keep Turkyglu, they will be much improved - if they lose him, they'll miss his floor leadership. Carter does provide something they needed more of, a perimeter guy who can create.
Jefferson to Spurs: Known all of his career as a offensive player, Richard will be bitten by bug that causes "defensive flu", upon arrival in San Antonio. He'll be grabbing pushing, holding with the best of them this season. Spurs with healthy Gino will be much improved.
Agree with Tomalak about Biedrins. Amare is WAY overrated and requires another good big man in order to provide max contribution. He plays no D, but is a diva - go figure. Nelson will make the trade though because he is an idiot.
Celts: Shopping Rondo and Allen - and getting turned down
Lakers: If we re-sign Odom and Ariza, barring injury, will repeat as NBA champs.