Seriously, grab a drink, this could take a while.

Three designers of ZeniMax Online Studios - Maria Aliprando, Nick Konkle, and Brian Wheeler - sit down to talk about gameplay and PVP in the Elder Scrolls Online, and we've got it embedded right here for your viewing pleasure. It covers a lot of the PvE combat, rewards systems, synergy with magic and abilities, and the like. There is a lot here, so be prepared to listen to a podcast. 

If that's not enough, there's also an extensive discussion with Matt Firor - a name who is rapidly becoming very fun to say out loud - on Edge Magazine that covers the return of public dungeon, doing away with World of Warcraft's now-standardized instanced dungeons.