How cool to see a thread on something that is my absolute passion! I'll try to not write a book in this thread, lol. Of course I advocate belly dance for everyone. It's great to see so many here who are interested in it.
There are *many* different styles of belly dance: Egyptian, Turkish, Greek, Lebanese, and of course American, which tends to be a collection of the aforementioned and more. I myself tend to perform mostly Egyptian(?Arabic), Turkish, and American (Cabaret and Urban Tribal).
Under the banner of American-style belly dance there are subcategories like:
Cabaret--what folks typically think of when belly dance is mentioned: flashy, sequins and fringe nightclub stuff.
Link to video:
http://saharadance.com/video/raqs_sahara_promo.html
American Tribal Style (ATS)--dancers wear more ethnic clothing from all over (East Indian textiles and Afghani jewelry and LOTS of it are very popular) and perform group improvisational dance.
Link to video (this actually slides into the next category a bit too, but it's a nice little example clip):
http://homepage.mac.com/tijjster/iMovieTheater4.html
Urban Tribal--the funky, clubby, industrial cousin of ATS. This is the kind of stuff I do when performing at "Battle of the Bands" types of events. A stunningly, breathtakingly amazing woman named Rachel Brice is the poster child for this dance style (link to video clip--if you click on only one link in this entire post, make it this one):
http://homepage.mac.com/tijjster/iMovieTheater5.html
Gothic--I haven't performed or watched much gothic yet, it's a new-ish category, but growing in leaps and bounds. It's a derivitive of the Urban Tribal style, but I've seen a lot of 1920's influences lately.
Non-video link:
http://meddevi.com/gothicbellydance/
I encourage interested folks to find classes--belly dance is just not something you can really learn from print. There are some good dvds out there too, but nothing beats an experienced teacher.
Disclaimer: None of these sites are affiliates of mine, they were selected only to illustrate the styles. I don't want to break rules and plug my own site. :O But I'm thinking it's OK to tell you there's a link in my public profile, if anyone's interested? If it's not OK to say that, let me know and I'll edit out these lines immediately.