Kirby has been around for pretty much 20 years and here is the history of video games for Kirby:

Kirby's Dreamland (1992)
Kirby's Adventure (1993)
Kirby's Dreamland 2
Kirby's Dreamland 3
Kirby's Tilt N Tumble (The game is spelled like that)
Kirby Super Star
Kirby's Air Ride
Kirby's Adventure Gamecube (Cancelled at E3 2005)
Kirby Canvas Curse (2005)
Kirby Super Star Ultra (2008)
Kirby's Epic Yarn (2010)
Kirby's Return To Dreamland (2011)

The history isn't in order, but I think that's all the games, but I do love Kirby, he's cute.

Information about Kirby:

8" (8 inches) tall
Unknown age
Can suck up anything
Can get abilites from enemies

There is more info, but I think that's enough to cover it.

My favorite Kirby game that I have played is Kirby Adventure on the NES. But I think the first Kirby game (Kirby's Dream Land) is less good than Kirby Adventure, because the first is a game similar to all other platform games, but not Kirby's Adventure. But the games of Kirby is really fun to play. Is cool that you can copy abilities of others enemies.

CarBitGTSaxen : Kirby's Adventure has many epic song tracks, but my favorite kirby game is Kirby Super Star Ultra, it has more than a dozen games you can play, it also has graphical improvements.

Kirby Q&A #1:

Q. How long can kirby hold his breath?
A. For ages and ages, he doesn't have lungs.

You are right about your list not being in order. But here is a list of Kirby games that you have missed in your list:

Kirby's Pinball Land
Kirby's Avalanche
Kirby's Dream Course
Kirby's Toy Box
Kirby's Star Stack
Kirby's Block Ball
Kirby 64: The Crystal Shards
Kirby & The Amazing Mirror
Kirby Mass Attack
kirby : Squeak Squad
kirby : Canvas Curse

rcarter2 : I rolled on the floor while laughing when I saw you accidently summoning kirby in the last 2 games! You summoned a vizzed person because you typed "kirby:" instead of "Kirby:".

Q&A #2:

Q. What is the best ability in kirby?
A. Stone, in Super Star Ultra, you are invulnerable to ANY attack.

summoning isn't actually case sensitive so it summoned it as "kirby" even though I did type out "Kirby". Should have taken into consideration that someone would be named kirby here

I disagree with the stone ability. In all the games, you are invulnerable. But it is super easy to accidentally fall down pits, killing yourself. I think that the Crash ability is the best. It can only be used once, but it kills all normal enemies on the screen and severely damages even boss characters. 

rcarter2 : For the stone, it was the best in my opinion because that's the only way I ever beat the true arena.

Crash can take the stone ability's place.

Q&A #3:

Q. Where does everything kirby eats go to?

A. A dimension and his stomach is a black hole, that's how kitby can inhale monsterously huge.

I personally love Kirby's Return To Dreamland, although I haven't bothered much with the Extra Mode... I also like Kirby's Adventure for the NES, that game was cool! I tried to beat the Arena in KRTD, and I found out that Dedede's hammer was practically the best weapon to use! It just completely destroyed everything, and the "Dedede Spin" gives you so many invincibility frames, I personally find it to be a major game-breaker. Kirby's Adventure was cool because it started off the franchise and it made the ORIGINAL concept of swallowing enemies whole in order to steal powers. That was awesome because Kirby could eat almost anything, including a few healing items which either restored a part or all of your health, and the extra minigames you could play once in a while were awesome too. The Kirby series is a really good one. I would personally give Kirby's Adventure a 7.7/10 and Kirby's Return to Dreamland a 8.5/10. Hope you guys continue to have a nice time!