I'm really impressed by the scanline filter available on the NEO GEO STATION games on PS3 ported by M2 back in 2010. I have those games since then, but I just realized
NEOGEO Station" where NEOGEO (Neo Geo) title can play with PS3 and PSP appears, also supports battle and cooperative play - GIGAZINE
Neo Geo games coming to PSN with online play | Engadget
Neo Geo Station Dropped From The PSN Store!! – Fighting Games Online