Here is Ironhand Straken. I am playing around with starting a guard army and with my love of bionics this guy is definitely going to have a home in my collection.
Here is the new Leman Russ Punisher. It seems people are bit wishy-washy on this tank. The turret looks cool at least.
And here we have what I think will become one of the most hated units in all of 40k - the Leman Russ Executioner with Plasma Sponsons. This thing is pure murder.