Best Obscure Gems?

What's the most obscure game that you've enjoyed to a good degree? What kind of games do you not hear about often in media or in communities, but you've enjoyed regardless? As a person who absolutely loves independent and lesser-known games, the PSP is one of my favorite systems for this.One of my favorites has to be Half-Minute Hero. I've heard virtually no discussion on it, but it has a lot of great defining features, among them being numerous throwbacks to classic RPGs and very nice internet cred with quite a few good references. All this just compounds the good gameplay.

I really liked the game "Holy Invasion of Privacy, Badman!" It was a pretty fun resource management game. Basically you had to build a maze that's shaped so that the ecosystem you create could produce monsters to fight adventurers.

Ah! I've actually heard of it before -- it's also known as "What Did I Do to Deserve This, My Lord?" and has a sequel. It definitely looks good and I'm looking to try it if I can find an iso for it when I jailbreak my PSP.