Of course, men can and do wear kimono, but generally (excepting TV stars and sumo wrestlers) the color and design is more subdued.
One interesting thing I learned about men's kimono concerns the article known as haori (羽織), which is worn over the top of everything like a tuxedo jacket, mostly during formal occasions:
Even though the outside is simple and plain, it's the inside of these jackets that's the interesting part. Take a look.
The little round man above is Daruma, a favorite of mine and a character you're likely to see a lot of in Japan. You can read more about him here.
