This week' s Newsweek (9/26/05) has an article on p. E32 entitled "Cruises for Hobbyists" ...... i.e., "themed" cruises.

So you don't have to dig it up, here is the paragraph on ours:

SINATRA: Celebrate big bands with the top arrangers on many of The Voice's greatest hits. Afternoons onboard the seven-day crossing from France to Funchal, Madeira, are filled with 1950's and '60's classic films and informal talks with Rat Pack friends (from $2937; rssc.com)

Judging from the posts here, most of us won't be spending afternoons chatting with the "Rat Pack" friends!

Other "themed" cruises mentioned include ones focused on Art and Architecture, Cars, Coffee, and Books.