I missed this thread before but I guess I can add my $.02 worth now to the original post...despite the obvious fanboyism in the thread title.
Genesis games in alphabetical order:
Castle Of Illusion - Good platformer
Chakan - Good gameplay but shitty sound
Phantasy Star IV - No rivals in the 16 bit era
Shining In The Darkness - One of the best battle themes for an RPG
Sonic The Hedgehog - The original is the best
Strider - Probably the best home port we got
Turrican - What can I say, it's Turrican!
Sega CD games in alphabetical order:
Lunar The Silver Star - Best RPG for the Sega CD, hands down
Sonic CD - Lots of fun and brings back some of the style that was present in Sonic 1 but missing from Sonic 2
Vay - A great Keranu-style RPG!
That about covers it. I certainly don't think the Genesis is "the bee's knees" of the 16 bit era (or ANY era), but every console I've ever played has at least one game I like.