This was a great episode! Its great to have Vala back, she always throws spice in the mix! Through Vala's eyes we get to see how the other side lives. The followers of the Ori are not all evil, there are many kind people like Tomin who truely believe what the Ori are telling them. The the Ori are benevolent and it is the Ancients who will distroy them all. And Vala's pregenecy is a great way to bring her back into the fold. Before she always had her own interests at heart, and the baby and her need to do something is what will make Vala's joining of SG1 believeable.
Plus Micheal Shanks is a great actor, and it is always fun to watch twists thrown in for him to work with!