Simply in honor of Kid Icarus: Uprising being released today.
According to Wikipedia they are:
Kirby's Dream Land
Kirby's Adventure
Kirby Super Star
Super Smash Bros.
Super Smash Bros. Melee
Kirby Air Ride
Meteos
Super Smash Bros. Brawl
Kid Icarus: Uprising
It's up to you on whether you want to keep Kirby's Adventure and Nightmare in Dream Land separate or not.
I'd personally rank them:
Kirby Super Star
Super Smash Bros. Melee
Super Smash Bros. Brawl
Kirby's Adventure
Super Smash Bros.
Kirby's Dream Land
Kirby Air Ride
I haven't played Meteos yet and haven't started Uprising either.
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Oh brilliant blade of cold as steel, rend the infinite darkness and crush my enemies to nothing... SAVAGE WOLF FURY