Bike Nashbar online used to sell Bellwether baggy shorts that I liked before I started wearing traditional bike shorts. They run a little large, so if you're in between sizes, you might want to order the smaller size. Also, when I got my first pair, they felt tighter than they should when I was pulling them up (elastic waist with drawstring), but they felt perfect once I had them all the way on. So make sure you give them a fair trial.

You may also be able to find baggy shorts with a bike shorts liner at other online sellers of cycling gear, like Performance, and I know Terry sells them too, although Terry's are constructed a little differently, with a waist closure that pulls across the front--I'm not crazy about that. Also check out The Touring Cyclist--I think they have the Bellwethers too.
Good luck in your search.
--J**