I have bought them all, but the DS was a gift for someone else. I own all the others.

I have only Nintendo consoles :P

Wii and Nintendo DS.

I've got all except the PSP, which I used to have and will have again when Kingdom Hearts comes out.

DS and 360 get the most play time, but over the last couple days and for the foreseeable future, that honour will go to Wii :p

In my house

Sony:
PS1,PS2(3),PS3(2), PSP(maybe 2, lost one lol.)

MSFT:
Xbox, Xbox360

Nintendo:
Nintendo, Gameboy Advance,Gamecube, Nintendo DS, Wii
(I dont know how I never had a SNES. Weird huh?)

Sega:
Genesis, Saturn,Dreamcast.

Side note:
Where can I get original Nintendo cords! I found it awhile back, it even had Super Mario Bros. 3 inside still but I cant find the power/av cords.

Edit: I also had this big pad with the joystick and big red buttons. I know its in the house somewhere but I forget what its called. Is that the Atari?

I own them all except the DS (I'm too much of a graphics whore).

PS3:  Used most by far.  Currently playing Warhawk & Rock Band

360:  Currently playing Lost Odyssey--Great game by the way.  Hadn't played it for awhile until LO came out.

Wii:  Haven't had it long at all.  Playing Fire Emblem: Radiant Dawn

PSP:  Currently playing God of War: Chains of Olympus....dying to play FF: Crisis Core

PS2:  Actually play ps2 games on my ps3, but am just getting ready to play Xenogears vol. 1-3

All my other consoles such as Xbox, NES, Sega Genesis, etc. have been sold or are stuffed in a closet.

i'm DSWii...and don't have near enough time for that...no way i could own another console...i still have to finish zelda and paper mario and then get smg, ssbb, mk, wii fit, pro evo, z&w, no more heroes, etc etc

last gen i had ps2, gc, gba; gen before psx, n64

I now own all the consoles. I got a Wii this week.

PS3: It's definitely my #1 played Console. Playing COD4 and DMC4. I get the multiplat games on this one just because I prefer the controls and the hardware.

Xbox 360: Playing Lost Odyssey. I bought this console mainly for Team Ninja / Mistwalker games.

Wii: I got SSBB. That's it so far. I really only seeing me play this for Zelda games and when friends come over.

PSP: Going to play GOW. I can't wait until FF7:CC

DS: Waiting on the FF4 remake to come out in the US. I bought this mainly for FF remakes.

PS2: I play these games on my 60 GB PS3. Right now, I'm going through Xenosaga Ep. I.

My brother owns all three of them. I only have a Wii and DS.