I love handheld gaming... have since I was a lad. My first hand held was a gay ass football game that really could have been anything. But it was suposidly football. After those I had many other Tiger games and even the Mini Arcade games Pac-Man and Donkey Kong.
But my first hand held system was Game Boy. At that time of course I didnt have a job and my parents wouldnt spend $100 to buy a video game for me. But with luck there was a contest through Captain Crunch where you had to figure who was the real captain crunch, the puzzle was solved by getting the game pieces from Capt. Crunch.
So anyway I come back home from a long Summer Vacation with my family and low and behold I got a package that held my Gameboy along with Tetris. Man was I excited.
Of course since then I have had just about every hand held system known on this planet:
GB, GBP, GBC, GBA, GBA SP, Virtual Boy

Game.com, GG, Nomad, GP32, NGPC, Wonderswan, Lynx, Zodiac.
The only one that I can think of that I dont currently own is the Turbo Express. And there is one other I cant remember the name of it. They were trying to compete with the GB and not sold in stores only through EGM and crap. It was a dark grey color and had yellow buttons. Played really crappy games too. I'm still trying to buy both of these systems. Everwhere I look for that crap one comes to a dead end though.
Oh, and I supose some others that I missed would be Gameboy Light, Neo Geo Pocket (BW), Game.com Pro and a few other re-hashes of other systems.
Anybody who actually read all of this... yes it probably was a big waste of time, and I almost feel sorry for you. Why did I said all of this, I don't know. But as you can see I love hand held games. But I'm this way with home consoles as well.