A DMC FZ-10 purchased in Japan has seven available languages (including English), but only comes with a Japanese manual. If you need an English manual, Panasonic is nice enough to provide the English manual on the web (together with manuals for many of their other products).
Panasonic DMC FZ-10 manual (English)
Panasonic Japan has English and Japanese digital camera pages. The English (and Japanese) page includes a manual (which looks like it was written in Flash! or something similar). Panasonic Japan's site also has a small number of `professional' photographs taken with an FZ10.