My Other Office
Slappa Ballistix Aura bag and sleeve for 15" MacBook Pro. They're awesome. The bag is a bit larger than I expected but that's fine... the sleeve has D-rings which let me clip the shoulder strap on and run with just the sleeve.
It's superb quality, really well padded, and almost the best bag I've owned. I just wish it had retaining straps inside for that little, extra safety - but it's not a big deal.