I've spent the last couple of weeks going through the first 2 ME games to refresh my memory. I never finished the 2nd one (lost interest or another bigger game came along.. I can't remember) and I'm nearing the end of ME2 now.
I played the first part of the demo. I wonder what the exploration mechanic will be in this one. I liked the idea of the Maco rover in the first one, but got bored with the carbon copy buildings you encountered on the different worlds.
Either way, I'm stoked for ME3. The origin thing is kind of a wash for me. Yet another layer of hassle the developers put between paying customers and their products. I pay for my games and don't steal. As long as they don't make me suffer for being honest by putting a buggy and defective DRM on it, I'm fine. Anything is better than SecuROM.