RE: The official Super Smash Bros Brawl thread.
Jiggly dominates the air, basically, with quick combinations of Fairs and Bairs (which, unlike other spams, has actually improved in Brawl thanks to knockback weakening when spamming), in combination with 5 jumps and rising pounds basically enable you to just slowly prevent the opponent from reaching the stage again, to then just abuse your long horizontal recovery and fly back, this means that even weak attacks are able to KO you at low percentages. But even on the stage, jiggz dominates the air, 1 wrong move and you get severely punished :O
Of course, there's rest, which is basically auto-ownage once you land a hit, which isn't too hard if your opponent does what you expect him to do.
It's stuff like that which give Jiggly a unique game-style, I honestly detest playing with any other character (I can play with them, but Jiggly's just so...)
There's also the "lol, dude, you got owned by a pink puff-thing" factor
That's a small rant, see, I'm not that bad :O
I'm not obsessed with Jiggly, she's just my main, and has been ever since SSB64 (mind you that both jigglies are completely different, and SSBB seems to be more like the 64 version, so I don't just stick with Jiggly out of habit).