"Luny Tunes" are the big reggaeton producers of the moment. they did gasolina... i think they maybe did "oye mi canto" as well?
Reggaeton/Grime/Funk Cariaoca (Baile funk) in Brazil are all tied together w/ what's been called the "electro-punk" thing here on GS... Thinking about these styles in a very, very flattering light, you could almost say this is the new "folk" music of the world-- homegrown, w/ little need for virtuosity. If you've got a mic + fruityloops or an MPC-- which is where most of this all starts, anyway-- you can make music. They took the whole DIY aesthetic of early hip-hop and ran with it.
As far as artists go... I dunno. MIA's record is interesting in that she basically mined the ghetto's of east london, rio, and
PR, used tons of distortion, and came up with a solid artistic statement. I think, production-wise, Luny Tunes and Mega from rolldeep in the UK are doing some interesting things w/ mid-tempo dance music. And DJ Marlboro in Brazil; baile funk is the lowest of lowest common denominators (only have the ringtone of the song you want to sample, but not the actual song? Just use the ringtone, it's ok) but his 2minute songs can rock a party like no one's business.
I say, give it another few years and every continent is gonna have its take on these 3-- post- hiphop dance music from the 'hood, w/ rough lyrics. International hiphop had its moment, but i would not be surprised if the growth of reggaeton/grime/baile sets the wheels rolling for a whole new slew of stuff like this.