pukunui
Legend
According to that article @trappedslider posted upthread, Tatiana is a huge MTS fan. The producer described her as literally vibrating with excitement at the prospect of getting to work with her. So what you picked up on was undoubtedly Tatiana’s very real excitement showing through her acting.I guess. I mean, I don't mind not knowing who she is, I'm used to that when it comes to celebrities, and I enjoyed the episode just fine, too.
Maybe it was the general fourth-wall breaking nature of the show, but it felt like every time they named her they nudged me in the ribs saying "Yes! MTS! Aren't you EXCITED!?" (To which I'd have to answer, "No, not particularly. I mean, that's cool for you, I guess?")
It wasn't a big deal, it was just mildly annoying.