I know it's not a mac but it's a small enough portable with a dvd burner,16 inch screen and it's $1899!
http://www.sonystyle.com/is-bin/INT...My03TtCbA=?ProductID=_J8KC0.Nq7YAAADx54tLgj.x
http://www.sonystyle.com/is-bin/INT...My03TtCbA=?ProductID=_J8KC0.Nq7YAAADx54tLgj.x