Well here's an interesting deal that never came to be. According to ESPN's Jayson Stark, a four-team trade involving Milton Bradley, Pat Burrell, Luis Castillo, and Gary Matthews Jr. fell apart at the winter meetings for an undisclosed reason.
According to a source, the deal would have sent Bradley to the Rays, Burrell and Castillo to the Cubs, and Matthews Jr. to the Mets. Burrell would have then been spun off elsewhere. No word on what the Halos would have received, though getting rid of Sarge Jr. and presumably at least part of his contract would have been a win.