Long ago, in the year 1995, Nintendo created Yoshi's Island: Super Mario World 2. Playing that game right after release, I can honestly say much like Sonic the Hedgehog and Genesis, I didn't like it. Of course in 1998 or 1999 I got my first Genesis and started picking up games for it, including the Sonic games for it, started liking the little blue hedgehog, and my Genesis. But in the early 2000's my ex sister in loaned me her copy of YI to play. I got instantly hooked but never kept the game (she did give me Super Mario RPG free though), but after picking it up recently for my collection I must say, I've now grown quite fond of that little game. From the drug like fuzzies, to the shy guys on stilts, to the crazy final battle, this game had me hooked for life.
It was one purchase I'll never regret (unlike my Day Dreamin' Davey purchase, argh) and never forget, great games like this don't come around often, and they don't make games like this anymore. My Sega purchases also extended into the SMS and Saturn.