Reply to Asked to play dubstep gig, anything special I should know?

I was recently asked to play a dubstep gig, something I am really unfamiliar with. Im going to sit down and listen to some mixes but while I am doing that does anyone know of some great dubstep tracks I could check out? Any tips on mixing? Im used to long mixes but seems like that wont go to well with this genre... Of corse I said yes its a chance to see new things and push myself but I'm just stumped on how to approach this stuff.

Help?