Tent: Terra Nova Laser Competition - Stupidly light, and I've replaced the supplied Titanium wire pegs with some sensible Ti pegs. I also tend to carry a footprint for it, since even the material of the ground sheet feels like you could wear through it rubbing it between two fingers!
Mat: Thermarest Prolite 3 - Which is currently in the "to be repaired" pile since it's got a puncture. I used my older Thermarest for the last couple of trips, but it's more than twice the size of the Prolite 3 one.
Sleeping Bag: The North Face Kilo (Long) for summer use. It's rated as comfortable down to 4°C, and I tend to find it a bit too warm in the summer. For cooler weather I've also got a cheap(ish) Technicals Catalyst 550, which is rated as comfortable down to -5°C, but is about twice the volume of the Kilo (both are down, you can't beat it for compressibility).
Stove: I can't remember what the brand is, but it's a gas stove with a cable to the cannister, which I find more stable than one's which use the cannister as part of their stand. It also has an integrated Piezo lighter which saves faffing with matches (which I carry anyway, redundancy!)
Pillow: Ajungilak inflatable - fairly light and small, so only a tiny compromise on lightweightness.
I don't have a spork yet, but I have one on order. If I'm lucky it'll arrive in the post tomorrow.