Wow, favorite painters, hard.
I've visited most of world's great museums
and while its easy to dismiss the impressionists as
an easy choice, there's a reason why the haugty aristocrat
and the farm worker both love them.
They really were on to something.
In person, what they did is much more impressive, the color, subject, texture, light, feeling
of the pieces create a sense of life caressing me.
You can stare a Monet painting for an hour (at least I did).
Also, I like Turner's very atmospheric, pre-impressionist paintings (he's seen as one of the precursor of the impressonist movement).
Finally, in the post impressionist, I like Seurat's pointisilism (using points of colors to create a painting).
And Cezane's flat, angular distorted landscapes.
Since all those painters are cornerstones of arts, I'm not exactly breaking new grounds with my preferrences :-).