
I think my first handheld was an arcade cabinet-shaped Pac-Man LCD game.
I wasn't impressed with the Game Boy at first. I could already play Tetris on my PC, and I couldn't understand why anyone would want to play on such a tiny green screen. The first game that really showed me there was a future in handheld gaming was Link's Awakening, which ended up being my top favorite Zelda game of all time.
Most of the time, Nintendo ruled my handheld gaming time. I did get into a lot of PSP games, but there was one time that I liked a handheld better than Nintendo's. And that was the Neo Geo Pocket Color. I thought that SNK vs. Capcom: Card Fighters Clash was better than Pokemon!