[...] RH is hard to explain in a sense that I like it purely because of the experience I had with it rather than the game itself being any good. (It is though! Really really good!)
Spot on. Just add Rhythm Tengoku to that, and that's my list + WarioWare: Mega Microgames (that's the first one).
I guess I could add some shooter collections in there like Gradius Collection on the PSP, as it has kept me entertained for years (my PSP library literally consists of all of Konami's shooter collections, Mega Man Powered Up, Darkstalkers Chronicles and Pop'n Music Portables 1 & 2. That's it, and I mostly just play the shooters nonstop).
But overall, I could literally live off of WarioWare:MM alone.