I still can't believe it took the writers/producers 4 seasons to finally kill Uther Pendragon. Sure, it was (supposed to be) sad, but on the other hand it was long overdue. The addition to where Merlin tries to save him felt forced. We see Uther get stabbed, he says good-bye to his son and then - oh yeah, he's still alive. For another couple days, just so magic can kill him. Seriously?
While I understand that this was necessary to make Merlin keep his secret (for suspense I guess?) I think Uther's death would have left much more of an impact if he had died right there in Arthur's arms. Also, it would have stopped the useless magic-to-save-him storyline and they could have used the time to deal with the aftermath. As an audience member I gotta say - I feel as of the writers didn't give ME enough time to grieve Uther's death. He was (understandably) depressed the last couple of episodes and wasn't really doing anything, and now he's gone. Well, yeah, that sucks, but who gives a damn? And who tries to murder a prince in the king's chamber inside a frickin' castle anyway???
I do think that for what it was, the episode was well done. There were some funny, emotional and strong scenes and the actors did a great job with the material they had.
Also: I am really glad that at least this time Morgana's plan didn't fail - she was starting to become a really ridiculous villain.