I keep flip-flopping between titles, but...
GBA] Gunstar Super Heroes (which is amazingly fun, but depressingly short-lived); Pokemon Fushigi no Dungeon: Aka no Kyuujoutai
PS2] Suikoden Tactics (levelling! want to clear it before Sui5 is released); Makai Kingdom (more levelling! though it takes forever...); Disgaea (and yet more levelling! I'll break the 1k mark with Laharl before Dis2 is released in Japan, even if it kills me..!)