Which franchise did you spend the most time with as a kid?

Mega Man and Zelda for me. Which is part of the reason why I'm stoked that they're doing the new Mega Man games in 8 bit. I love Capcom! And of course, every Zelda game that comes out I fall in love with because I'm so attached to the series. I learned to read with A Link to the Past. Go to school (Grade Primary), listen to the teacher talk about letters and stuff and how they work... then go home and play Zelda. Learning to pronounce and spell Sahasrahla at such a young age was a proud moment for me :P

Mario was first with the original NES and then I went to Sonic because everybody knows Sega does what Nintendon't

Tekken and Street Fighter

Final Fantasy by far.

So much of my younger days were spent diligently protecting the innocent as a Rainbow Six operative.
 
It was strangely one of the first video games I found myself actually completely engrossed in, especially considering my age. It kicked started a gun enthusiasm, and I've not been the same since.
 
I used to run around my house peeking over corners and eliminating "tangos". :)

Mega man. 

mario and sonic

Final Fantasy was the one I played the most probably.

I'm gonna be a real man here and say probably a toss-up between Crash Bandicoot and Spyro ;)

" I'm gonna be a real man here and say probably a toss-up between Crash Bandicoot and Spyro ;) "

Zelda, Mario would probably be a close 2nd.
  
I was raised as a Nintendo fanboy, go figure. >_>

Mario, Mega Man, and Doom/Hexen/Heretic/Quake. Kinda ran the gamut of video game extremes. 

>_>
<_<
age of empires

Zelda.

" I'm gonna be a real man here and say probably a toss-up between Crash Bandicoot and Spyro ;) "

Legend of Zelda.

street fighter easily

Zelda and Pokemon!
 
Oh and how could I forget Kirby.

My number one of all time had to be Super Mario All stars, specifically Super Mario World. 
Runners up would have to be Ultimate MK3  and Tombraider

Pokemon.

Grand Theft Auto.

Mario and Sonic.

" I'm gonna be a real man here and say probably a toss-up between Crash Bandicoot and Spyro ;) "

Definitely Mario by a wide amrgin.  My teenage years belonged to Age of Empires, Halo and RollerCoaster Tycoon.

" Mega Man and Zelda for me. Which is part of the reason why I'm stoked that they're doing the new Mega Man games in 8 bit. I love Capcom! And of course, every Zelda game that comes out I fall in love with because I'm so attached to the series. I learned to read with A Link to the Past. Go to school (Grade Primary), listen to the teacher talk about letters and stuff and how they work... then go home and play Zelda. Learning to pronounce and spell Sahasrahla at such a young age was a proud moment for me :P "

Franchise? Hmm... can I just say games? I promise there will be few. 
 
Mario Kart 
Mega Man
Sim City on SNES 
Final Fantasy VI 
Rock and Roll Racing  
I also played Capcoms Disney Games over and over again forever.
 
And when do we stop being kids? I was like...16 during my Mario Kart 64 and Goldeneye frenzy

Final Fantasy by a good margin.

Mario, since there are just so many Mario games.
 
I've played: Super Mario Bros. 1, 2 & 3, Super Mario World 1 & 2, Super Mario All-Stars, Super Mario Land, Super Mario 64, Dr.Mario, Super Mario Kart, Mario Kart 64, Super Paper Mario, Mario Paint, Mario is Missing, Mario Party and Super Smash Bros.
 
Seriously, what else could my number one be?
 
Runners up:
 
Doom
Command & Conquer
F-Zero 
Street Fighter
Mega Man

Sonic and Streets of Rage - Sega Fanboy here!

a lot of final fantasy and sonic

I split my time evenly on the NES between the Mario and Zelda franchises.

The first thing that came to my head was Mario games but, when I stopped to think about this... I mean REALLY stopped to think about this... I discovered a deep, dark secret of my video gaming history... The franchise I spent the most time with when I was a kid was...

>.>

<.<

EA Sports' NHL Franchise...

Super Mario 64 
The Legend of Zelda: Ocarina of Time 
Goldeneye: 007  
Perfect Dark 
Conquer's Bad Fur Day 
 
Basically my N64 ruled my life.

pro evolution soccer (and international superstar soccer)
tekken
bloody roar (oh yeah) 
zelda
crash bandicoot

Mario, followed by Mega Man.

Sonic and Sensible Soccer.

Heroes of Might & Magic, 2 and 3 to be precise. I have spent hours and hours and hours playing those.

Pokemon.

Yeah Mario because Mario is almost in every good Nintendo game (especially the recent ones).
 
C&C and Battlefield are the runners up.

Final Fantasy
I dumped SOOoooo many hours (Days....Weeks...) into those games

Blue Marlin.

Mega Man

Donkey Kong Country

" Sonic and Sensible Soccer. "

pokemans

" Mario and Sonic. "

Mario goddamn Tennis for the N64
 
so mario xD

Wow, I'm really surprised nobody has claimed the series that would be the top of my list:
 
Castlevania! 
 I must have spent hours on Castlevania and Simons Quest as a kid. Close runners up would be Mario, Megarace for PC, and Mario Kart.