Supporting...

So, my last 4 games (5, including one queue I dodged) have been spent in my secondary role, support. Don't get me wrong, support's okay, but it gets dull to alternate between great, communicative ADCs and that one guy that continuously charges the enemy.

What lanes should I choose as an alternative to support? And which champ should I play? I don't want to be broken, but I want some idea of how to enter these mysterious realms that they call 'sustaining' and 'attack speed'.