100 episodes are a no mean feat and should be celebrated. The 100th episode should be nothing short of memorable, this one is, but for the wrong reasons.
A comical premise fails to be comical past it's first scene, there is only so much "bad actors make there own stargate" you can watch before the premise runs thin.
It becomes a struggle to take anything in the episode seriously, including the supposed threat. I for one don't care what happens to Martin Lloyd, I didn't care the first time.
The killer nail for this episode comes at the end, when a spaceship appears to a crowd of people, with camera's and it's put down to special effects. I understand the episode is not to be taken seriously but something like this would be a big thing.
All in all a terrible episode, and for the 100th it's unforgivable.