I suppose it depends on what you think is "fun". Basically, chams are not really social, so it won't want to be held or carried around much. If you prefer a herp that likes handling chams will not be a good choice. They need a fair amount of daily care compared to many other herps (such as daily feeding, caring for live insect prey, spraying drinking water for 15 minutes or more 2-3 times each day, etc), and need larger screen cages instead of the usual tank. They are beautiful to watch, and creating a setup with live plants, humidity and correct lighting is the fun part if you are a creative person. For good basic info on what you will need to care for a cham correctly, read on these sites:
www.adcham.com, www.chameleonjournals.com, www.geocities.com/ccicenter, www.chamresearch.com, and www.chameleonnews.com
Best "starter" species are the veiled and panther chameleons, but don't be tempted to get a small baby...you'll have to deal with delicacy and hundreds of tiny fruit flies as food! Choose an older cham instead.