The Himalayan Cat looks almost  exactly like the Persian Cat, with snub nose, flat face, broad head, short body and thick, heavy, very long-haired coat. The only difference is that this breed shows the colorpoint coat pattern of the Siamese. That is why the breed is also sometimes called Colorpoint Longhair Cat, Colorpoint Persian or the Pointed Persian.
    The Himalyan is undemanding and doesn't need constant attention like the Siamese, it adapts well to all kinds of situations. It gets along with children and makes friends with other animals easily. It is very affectionate and makes both a good family pet and a good companion. 
The voice is slightly louder than that of the full Persian, but much quieter than the Siamese. Closer to Persian than to Siamese.

Color forms:
CFA: Himalayan (point) pattern; chocolate point, seal point, lilac point, blue point, flame (red) point, cream point, tortie point, blue-cream point, chocolate tortie point, lilac-cream point.
Himalayan Lynx (point) Pattern: seal lynx point, blue lynx point, flame (red) lynx point, cream lynx point, tortie lynx point, blue-cream lynx point, chocolate lynx point, lilac lynx point, chocolate tortie lynx point, lilac-cream lynx point.

Further reading for Himalayan lovers:
Himalayan Cats: Everything About Acquisition, Care, Nutrition, Behavior, Health Care, and Breeding (Complete Pet Owner's Manual) by J.Anne Helgren et al.
Guide to Owning a Himalayan Cat: Feeding, grooming Exhibitions, Temperament, Health by Coleman McDonald.
All About Himalayan Cats by Joan Brearly et al.