Front-end design is not my forte but I'd consider myself a decent back-end programmer.
I've got experience coding in front-end languages like HTML (4 strict and 5), CSS (2 and 3), and Javascript (including jQuery with some AJAX). However, I've had very limited exposure to the latter (just a couple personal projects like a 3D viewer). The biggest reason why I don't do very much front-end work is because I hate CSS.