CheapTickets.com - Spring Cruise Sale: Sail from $37 per night

Ahoy, there, matey! Shall we rendezvous on the Lido deck and go scuba-diving at oh-nine hundred hours? Okay, so our ship-speak isn't really up to code, but you can brush up on yours, courtesy of CheapTickets' Spring Cruise Sale. Packages on all the best cruise lines start at just $37 per night, and the sale runs through 05/31/2009.