I recently made fun of a cover for a James Bond novel put out in the 1990s by MJF Books. A number of commenters said they actually rather liked it, and I have to admit it's grown on me too.
This is especially the case now that I've found more of the covers in the series. Yes, they're cartoonish and a bit daft, but then, let's be honest, so are the books.
UPDATE: The art director for MJF has kindly commented to let us know that "the jacket series was designed by Rich Rossiter, and the illustrations were done by Christoph Blumrich."