Under the main telly a 360, original XBox and Dreamcast.
At the other end of the room in the built in tv cupboard thing I made for when Woman & kids are watching soaps & gooseberry fool on the main tv are a PS2, GC, chipped PSX - great for playing Yank imports from ebay when the UK versions are difficult to get hold of, SNES and SEGA Mastersystem.
Under the sideboard languishes a N64, gathering dust and feeling neglected as I just couldn't find the love for it after buying it to see what all the fuss was about.
I recently put a 250GB HDD in the PS3 as I was running out of space (those PSN downloads really eat up space) and I'm going to have to buy a 120GB HDD for the 360 soon, especially with game installs coming)
DS Lite PSP GB Micro
Original Xbox Slim PS2 Gamecube N64 SNES NES
Pretty sure I've still got a C64 and a speccy somewhere as well. I'm thinking about setting up the Xbox again - I want to replay Stranger's Wrath and I've given up hope of it ever working on the 360.
Under my telly: 360 20Gb Premium PS3 60Gb upgraded to 350Gb
Hand held: Black DS Lite Black PSP (original)
Bedroom: Purple Gamecube (only games I have for it are all the Resident Evil games) PC hand built by myself 6 months ago and still kicking ass Laptop that was high end 3 years ago so it's still ok for running the likes of WoW