We study conformal gravity in d=2+1, where the Cotton tensor is equated to
a--necessarily traceless--matter stress tensor, for us that of the improved
scalar field. We first solve this system exactly in the pp wave regime, then
show it to be equivalent to topologically massive gravity.Comment: 6 pages. Dedicated to Andrzej Staruszkiewicz, a pioneer in d=3
gravity, on his 65th birthda
