Ohhh man it's soo hard to choose...so I won't. N64, SNES, Wii, and PS1 all for me. That covers all three Super Smash Bros, Super Mario 64, Mario Kart 64, and most importantly, Final Fantasy 6, 7, and Tactics.
u can put almost any console on a psp, i go wit a psp.
i hav all these on my psp:
NES:
-Mother 1
-Mother 2
-Mother 3
SNES
N64
-mario 64
-star fox
Play Station 1
-crock 1 and 2
Game boy
Game boy color
Sega Genesis
Gameboy advance
-some kirby game
DS(dossent run well)
game and watch
Atari 5200...I broke 3 sets of joy sticks on River Raid!!!
And NES
The average high score on Mario Bros when complete was around 300K IIRC. I got 8 million on a bet. It took 2 days. How? Turtle tip for a pile of guys, then kill everything, go back turtle tip again, ect.
I got my 65 year old mom addicted to it. She would wake me up in the middle of the night because she was on her last guy, and she couldn't turtle tip. I'd get home from the bar around 2AM and see the blue light from the game in the window LOL. She would have her thumb wrapped in gauze because the dreaded Nintendo thumb blisters.
River Raid was tough. I had a ton of other games too for it, but the joy sticks always broke. I ended up trading the whole system for a set of slicks on Cragar SS rims for my drag car. Gotta love the flea market.