Nice work, Mr Chow! Stanley Chow is an illustrator and graphic designer with an abundance of great work on his blog, agency website and Flickr stream. I was going to point out one piece in particular but it's all so good I can't decide!
A great Serge and Jane from London-based illustrator, Caspar Williams. Have a look at Caspar's website for more beautiful drawings, great colour schemes and lovely hand lettering.
I must admit that this one has jumped the queue but I couldn't let a pumpkin Gainsbourg hang around until the middle of November. Hopefully, you're all still in a sufficiently Halloweeny mood. This beauty was created by Sarah Kershaw. Sarah has recently graduated with a BA in Illustration for Children's Illustration (congratulations, Sarah) but also makes beautiful handmade books. Have a look at her blog and Flickr stream for more examples of her work.
Angelo Seminara is an Italian-born illustrator and graphic designer now living and working in Paris. Here's what he has to say about Serge "it's really hard to describe how much his music has influenced my work and life (well in a very complicated way he's responsible for my expatriation to Paris), so it's great to find others illustrators who love him". That's the power of Gainsbourg! Angelo is influenced by futurist painters such as Balla, Boccioni and de Lempicka. A selection of his illustrations can be found HERE.
Weber is a German illustration student and has recently become a fan of Serge Gainsbourg. There isn't a website yet featuring Weber's work but once there is I'll post a link to it here.