The Pleasure of Port
I'm one of Port's biggest fans. A good port and a cigar is probably one of my favorite habits for after one of those dinners where you're just nothing but happy. I'd even put it up there with a good whisky for a relaxing evening.
The Wine Sediments blog has gone in to detail about some of the differences and similarities between the types of ports, namely Ruby and Tawny.
If you're new to Port or interested in learning more, it's definitely a good read.
The Pleasures of Port [Wine Sediments]