Let's play Combine-A-Class

We like to explore the hybrid role here at WoWInsider, but one player on the official forums has taken it to a whole new level. He asks a simple question: if you could combine two classes together into one uber class which would you choose?

The possibilities aren't endless, but they are fascinating. You could take the defense of one class and mix it with the offense of another. Warrior grafted onto Warlock comes to mind. Or throw together two similar abilities for god mode: Shamadin invincibility anyone? Shadow Priest + Warlock would be high dps and hard to kill. Plus, think of the utility.

The combinations are fun to tinker with. So we ask you, faithful readers: If you could meld two WoW classes together into one, which two would you choose and why?