Tai Chi's a good starting point for me from a martial arts perspective. It's soft enough so that I can do it even with a couch potato physique, and it provides good practice in things like balance and co-ordination that might serve well if I go into a 'harder' martial art at any point.

I do have a couple of akidogi, but haven't made use of them yet. I figure I need to be a bit more flexible and with a few more muscles for padding before I start getting tossed around a dojo.