I posted earlier, but I changed my mind.

DS>PS2>PS1>SNES>N64>NES>PS3>GCN>Wii>Xbox360>GB(A)

I dropped Wii because I realized as much as I like several games I wish there were more.

DS, PS3, and Xbox360 went up because of the games.

GB(A) could be higher, but I never got into it.

I didn't include Dreamcast because although 2 of my favorite games are on there, it doesn't have much else.

In order of most favorite to least favorite:

Sega Genesis
N64
Xbox 360
Game Boy
Xbox
Dreamcast
NES
Gamecube
And...the Virtual Boy. Yes, I purchased one. My eyes are finally recovering from playing it.

Starting with my favorite:

Dreamcast
Windows
Amiga
NES
Playstation 3
Playstation
Turbo-Graphx 16
Saturn
Playstation 2
Commodore 64
Nintendo 64
Atari 2600
Vectrex
X-Box

1. DS

2. Dreamcast

3. Playstation 3

4. Turbographx 16

5. NES

6. Genesis

7. SNES

8. Amiga 500

9. NeoGeo

10. N64

11. Atari 2600

12. Commodore 64

13. Gamecube

14. Wii

15. Xbox

Sega Saturn > PS3 > Mega Drive(Genesis) > GCN = Dreamcast > Game Gear > Atari 2600

Gamecube>Wii>N64.

Am I the only one thinking that the GC is the best console ever made?

Wii
PS2
GC
N64
PS1
360
Xbox

Never really understood these lists simply because:

360 plays Xbox games.

Wii plays GC games and via VC plays NES/SNES/Gen/Turbografx/Master System games

PS3 plays PS2 games and via PSN plays PS1 games.

Just in terms of variety of modern and older stuff the current round of machines can't be beat by older machines.

Back in the day I chose Genesis over SNES, N64/DC over PS1, and GC/DC over PS2/Xbox and now I have Wii over PS3/360.

1.N64
2.Dreamcast
3.Wii
4.Xbox360.
5.GC

1: PS2 (thanks to GRAN TURISMO 3 and 4 )

2: PSPl

3: PS1

4: nes

5: gba