One thing that came to mind went was the similarity between the plot to bomb the builing and the one of the Oklahoma bombing several years ago. I liked that subplot of the revelation of Nikki's deceased husband. I think it gave Elyssa Davalos an opportunity to show her acting skills and I think she passed the test. Her partnership with MacGyver is doing well so far and even when I liked to see MacGvyer alone, they make a great team.
The last scene had me on the edge of my seat. I was basically counting the seconds until MacGvyer was able to defuse the bomb, his way. One other thing that I found funny is the technology that we see in this episode was so brand new at that time, with those printers and that software that made us all very excited that they were able to identify bad guys with it.