The return of Scotty made me so happy because it came as a surprise (I try not to look ahead). The first half of this episode was a bit slow and a downer. I was thinking: C'mon Geordi! Get Scotty an off duty engineer to show him around. Don't you realize who THIS IS?
But the second half was awesome! It was great seeing Scotty do what he always did and the mutual respect that was developed with Geordi. Great episode worthy of James Doohan.