Here's a list of my dogs' titles and what they mean.

First, links to the various organizations' web pages:

AKC Home Page (American Kennel Club)
ASCA Home Page (Australian Shepherd Club of America)
NADAC Home Page (North American Dog Agility Council)
UKC Home Page (United Kennel Club)

Versatility

Obedience

Agility

Tracking

Herding

Misc