Every now and then I do a bit of 'street teaming' (i.e. I'm the person that hassles you for your e-mail address as you enter the venue). Tonight I did it for Cut Copy, knowing nothing about them. And they were absolutely ace. Electro-pop with occasional bits of loud guitar and, well, some very 80s keyboard. If the idea of a mixture of New Order, Royksopp, Depeche Mode and a great big grin on the face sounds like a plan, you'll like it.
What made getting e-mail addresses easier was having free CDs to hand out at the gig. It was basically a mixtape which you can also download here:
http://cut-copy.blogspot.com/I'm only 5 minutes into it as I type (it's an hour long) but it's all jolly enough so far...