1. Amiga.
2. Dreamcast
3. Sharp X68000

My picks are...
1. Commodore 64.
2. Amiga.
3. Arcade.
I thought about putting the Super Nintendo in there, but I just can't see Nintendo agreeing to letting their games loose on the internets.

1. Nintendo 64
2. Gamecube
3. Gameboy Advance(these should be easy to port, just adding multiplayer :) )

If guys get Dreamcast games, its game over for me.

1. Amiga
2. Sega Megadrive
3. Super Nintendo

1. Super Nintendo
2. Nintendo 64
3. Sega Genesis

1. PS2 (hard to find rpgs and other cult classics).
2. Dreamcast
3. Playstation 1 (same as ps2, properly emulated games like Valkyria Profile, Xenogears, etc).

1. Nintendo 64
2. Sega Dreamcast
3. Super Nintendo

1. Dreamcast (reason: i never had but reaaaaaaly wanted)
2. Nintendo 64 (reason: ocarina of time)
3. Super Nintendo (reason: all time best console)

Amiga makes the most sense to me for first choice.
Arcade and Neogeo would be nice too.

1) Commodore 64
2) Amiga
3) Super Nintendo

1. Sega Megadrive
2. Sega Dreamcast
3. Arcade

1) Commodore 64
2) Amiga
3) Super Nintendo

1.) Dreamcast
2.) Nintendo 64
3.) Super Nintendo

1. Dreamcast (never had a chance to get one)
2. Nintendo 64 (amazing.)
3. Super Nintendo
`nuff said.