And now, thanks to Just_Desserts, here's NTSC for SDLMAME. You'll need SVN #30975 or later for this to work properly.

NTSC shader pack download

There are two versions: NTSC is for using it by itself, NTSC_chain is for putting it in glsl_shader_mame0 and then chaining other shaders. For example:

-glsl_shader_mame0 NTSC/NTSC_chain -glsl_shader_mame1 CRT-geom/CRT-geom gives this: