I've always been a fan of themes for Windows Mobile and quickly becoming a fan SPB Mobile Shell themes. Themes give you the ability to have your Windows Mobile phone become more reflective of your personality, moods, and likes.
Fuzemobility.com is reporting on a French website that has a forum section dedicated to SPB Mobile Shell themes that has caught my attention. Actualitemobile.com has nineteen pages of home-grown QVGA, SQVGA, VGA and WQVGA themes for Mobile Shell v2.x ranging from goofy smiley faces to Star Wars themes.
The site does require registration to download the themes and is written in french. Should you not be able to read french, you'll need something along the lines of Google Translate to navigate around the website.