T.J. Howell has some imaginative suggestions for teaching Caesar, including setting up seating charts to resemble Roman battle lines! There are also suggestions for bulletin boards and props, as well as a bibliography. T.J. has also written two lesson plans, based upon Caesar's Gallic Wars: Decision at Alesia, which explores Caesar's perspectives of the motivations of the Gauls; and Roman Heroics, which is based upon Caesar's only campaign in Gaul that fails.
Remember, the Ides of March are approaching! See past blog entries keyed to Caesar for some interesting resources.