The following contains MAJOR SPOILERS for the "Identity" episode of the SciFi Channel series, "Stargate: Atlantis."

This week, Keller switched bodies with an intergalactic criminal, and it all meant ... nothing. This really isn't the type of episode I'm looking for as the series gets closer to ending its run. I'm hoping for epic space battles, time paradoxes and maybe the return of those evil Asgard. Hopefully, they're saving that stuff for the final two hours and the TV movies, because "Identity" was nothing but filler. But, like always with SGA, it wasn't all bad.

First, I mostly liked the way the switcharoo played out. Not knowing how Neeva Casol would react to our Atlantis buddies made for some fun suspense, especially after she shanked Zelekna. I really think offering a quick "Excuse me, I think I've switched bodies with someone you know," would've been a better strategy than the stab-and-hide, but I guess Neeva isn't so quick on her feet. Makes you wonder how she and the other two Stooges haven't been caught and executed yet. Maybe most of the Pegasus denizens are as dumb as they look?

Well, luckily for our heroes, Neeva didn't get the chance to hurt anyone else thanks to Ronon's intuition. Actually, Rono's intuition came in handy a lot in this ep, but more on that later.

I think it was a smart move focusing on Neeva's displacement first and keeping us in the dark about Keller's whereabouts. For the first third of this ep, I kept wondering, "Where's Keller? And is she wearing a slutty space burglar outfit?"

Turns out she was taken prisoner by the local Renaissance Fair-loving yokels. And yes, she was dressed like a slutty space burglar. Still, I can't help but wonder what it would've been like to see Jewel Stait actually play Neeva lost in Atlantis. That probably would've made things more mysterious/suspenseful, but I really liked Dawn Olivieri's performance.

We got some pretty funny stuff from McKay this week, who probably should've been more stressed out about his girlfriend being stuck in someone else's body. It was fun to see just how much contempt Rodney has for Zelenka ("It's a light coma.").

I also liked learning that McKay is, of course, allergic to the planet's grass. I get why no one else on Atlantis can see what Keller sees in him, but I still like that she chose McKay over Ronon. What's there to talk about with that guy? Favorite stunner settings and and sure-fire ways to kill twenty Wraith drones in less than five minutes?

Speaking of Ronon, his impossibly awesome tracking skills were a little off this week, but he did make two good calls. First, he was the first to sense that Keller wasn't really Keller. Second, he was the only one who had the guts to blast that "Freaky Friday" device. I'm glad that thing is gone. I didn't get how it worked or what it was supposed to do in the first place, and I never want it explained to me ever again. Ever.

So, Teyla continued to take a backseat, which was disappointing, but Woolsey hit all the right notes here in his bossman role. I would've liked to have seen a nice fight scene involving Sheppard and Neeva. Joe Flanigan spent the whole ep looking like he really, really wanted to hit or shoot somebody. I felt for the guy. But, Dr. Beckett showed up for a few good scenes, so I didn't really mind seeing Teyla and Sheppard stuck in the background. I really hope Beckett returns for the finale and the movies.

What Worked

Dawn Olivieri was pretty good as our "baddie we gotta work with" of the week. It looked like she was shot at the end, but Woolsey said her remains had not been recovered. We might see more of her in the future. That wouldn't be a bad thing.

I like old-fashioned sci-fi suspense tales, and the first half of this ep almost played out like something from "The Twilight Zone" or the original "Outer Limits." Things turned into a race to the finish toward the end, but this was a nice change compared to last week's slow-paced episode.

Keller was stuck in a prison cell and Beckett swooped in and took her place. I'm no Keller hater, but I prefer Beckett any day. I can't wait to see him in "Star Trek."

What Didn't Work

Like I said, this was filler. You could probably pluck this episode out of the continuity without any problems.

Also, I think the writers need to show Teyla a little more respect. I know we can't feature every character front-and-center every week, but I don't think we've seen her do anything cool since "The Queen."

Giving Credit Where Credit Is Due

"Identity" was written by Carl Binder and directed by William Waring. "Stargate: Atlantis" airs at 9 p.m. (8 p.m. Central) on SciFi Channel and stars Joe Flanigan, David Hewlett, Rachel Luttrell, Jason Momoa, Jewel Staite and Robert Picardo, who is still awesome, even though he didn't do much this week.

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