In reply to Lankyman:
If you are down that way with an ok forecast, Castle Dounie is worth a walk. It's above Crinan, starting from the Crinan harbour car park, and I think it's the best viewpoint in mid Argyll.
Also in the same area, worth exploring Kilmartin Glen. Not really a walk as such, but a huge collection of Bronze age and Neolithic monuments, cup and ring marked stones and Dunadd Fort, where they crowned the kings of Dalriada. It's outdoor stuff, but not really a proper walk. It is very interesting though