I didn't think the final episode was so bad, but it was certainly no episode 9. I particularly loved the scene at the end with Mike, really looking forward to seeing the birth of Saul in the next series, and how is Kim going to take seeing Jimmy turn?

And for the record, Michael McKeane's best role before this was without a doubt as Fear/The Clown in Star Trek: Voyager - http://en.memory-alpha.org/wiki/The_Clown