Like I said in the DVD Maniacs thread, and elsewhere, I like the Ratman cover... the tagline's a belter for sure!
Not keen on the Flavia one, bit busy for my tastes. But really at the end of the day I can honestly say I've never been put of buying a DVD because of the cover. Christ once I've bought it it'll spend the rest of it's life on my shelf with just the spine showing.