First and foremost ↓
-Megaman Series (except for the starforce series, I think it´s a rather limited battle network reboot)
-Mother 2 & 3
-Final Fantasy VI, (this one in particular I believe is the most solid FF entry, (IMO of course))
-Chrono Trigger & Chrono Cross (this one in particular has it´s depressing moments, but it´s awesome)
-Kingdom Hearts Series (BBS-FM is my favorite out of sheer hidden boss difficulty and replay value)
-Metroid Series (even Other-M, but super metroid & Fusion will downright win by sheer awesomeness)
-Any cool-looking RPGXP project hosted here of course