If you just can't get enough of those super-cute Zerg, then let us direct your attention towards the newest Blizzcast where lead designer Dustin Browder gets chatted up on everyone's favorite carapace menace. Specifically this discussion starts out being all about the Zerg Queen unit and how when playing with her it feels a lot like a game of cat and mouse. Dustin goes on to say that you can think of her as a classic science fiction monster.

Then the discussion moved onto the Ultralisk unit, which is still in a state of flux. It seems like the dev team hasn't quite figured out just what they want the unit to play like and that's to be expected for a late-game unit that doesn't see as much playtime as the rest of the Zerg. There's quite a bit more beyond even that, so if you're a diehard Starcraft II junkie we'll just point you to the page so you can listen in for yourself.