You're talking about Kirby Super Star? So excellent!
List of Kirby knowledge (At least my knowledge):
He was originally supposed to be a test dummy.
There is a KDL3 (kirby's DreamLand 3), only in Japan though. On the SNES.
Super Star is pretty rare in the US (I think)
Kirby's avalanche is like a Mean Bean Machine (Gensis) clone, but with voices and some other things.
And some more...
The ending for Revenge Of Meta-Knight (KSS) the ending is like a Mega Man X ending.
You see, the ship that they escape falls into the ocen while they fly off and watch, then they (Kirby or Mega Man) ride off, and the credits roll, showing the cast.
Meta-Knight looks like A Blue Kirby when you defeat him, right? He's blue, has little eyes, and a round mouth.
An extremly rare and valuable Yoshi!
"Who want''''s to buy a gold Yoshi? Selling Price, $99,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999,999!" (almost 10 Googols!)