I'm still trying to get my head around what this show is trying to be. It doesn't seem to have that practiced blend of the serious and the goofy that "Eureka" found very early on, at least not yet. There were some interesting serious aspects of this episode, pertaining to Leena and the traces of McPherson still in her mind, which was treated without a hint of amusement.
And then there was the rest of the episode. It was definitely a bit over the top, which is usually not a problem, so long as it fits into the same world as the serious parts. I'm just not sure they meshed all that well. That said, I could watch Claudia banter all night long, and the central idea of the episode was a lot of fun.
Perhaps part of my problem was that the main plot included some very intentional logic issues. Which again, would have been fine, if the entire episode was framed in that same vein. But since it wasn't all a big over-the-top silly farce of an episode, it made no sense at key moments of "danger".
For example, if a gladiator is about to impale you, and your partner right behind you is armed, why in the world would you stand right in her line of fire so you have no choice but to get gutted? For that matter, run! Also, at the end, the robot was real enough to use a magnet to take away their weapons, so why not just tackle the evil mad scientist to the ground, detain him, and play "dodge the robot" until the crisis is resolved? It just felt like the characters were making choices to serve the plot, which is always annoying.
It's still the kind of summer show that I look forward to each week, even as a relatively new member of the audience, but it strikes me as similar to "Eureka", in that I enjoy it despite its uneven track record.