Everyone is clamoring over Jennifer Morrison leaving the show at least temporarily, so here's my take.
Our journey begins in season 3. Chase and Cameron start sleeping together, but Cameron ends it after Chase wants it to be a real relationship. The season finale ends with Chase getting fired, and Cameron and Foreman quitting. Cameron shows up at Chase's door and thus their relationship begins.
Season 4 started with a whole new cast of characters with Chase and Cameron on the periphery occasionally popping in to do something unimportant. Their relationship continued until season 5 and they finally married in the season finale.
Cut to season 6. The new team is split, so Cameron and Chase fill the void. The short story is that Chase kills sometime, and later Cameron finds out. They decide to leave the hospital together, but then Chase decides to stay, so Cameron apparently leaves him.
Let's face it. Chase and Cameron weren't given enough screen time in the two previous seasons to make their relationship believable. The writers spent more time with Foreteen than them which is a shame. Now we're supposed to believe that somehow the allure of diagnostics and House made Chase willing to destroy his marriage. Without any pretext, he just decides and Cameron exits. And this is also disregarding all the episodes where Cameron was totally fixated on House. The final word on that is that she's over him, and he's responsible for what Chase did, which essentially makes him a terrible person in her eyes.
Perhaps the blow was softened by the last scene which was quite excellent, but I was left with the thought "that's it?" Five years at on House, and Jennifer Morrison has to leave due to... Not only did it not make sense for her to leave, but also the manner in which she left was pathetic. The writers couldn't think of anything better, so they sent her out uncharacteristically
I suppose Cuddy and Lucas fit in the pattern of things randomly popping up. After Lucas was absent for an entire season, he shows up and has a few snuggly scenes with Cuddy. Huh? We've rarely seen Cuddy with another guy, and then Lucas who showed only a physical interest a year ago is now fully embedded in her life.
The porn star medical story fit nicely with all the Cameron Chase drama going on, but it really wasn't the focus of the episode.
Once again, the redeeming factor of the episode was House who went around pestering Taub and Thirteen in funny ways. Eventually they caved and joined back in which by itself is a snore.
Episodes like "Teamwork" make me wonder how the writers ever made it to a sixth season. Then I remember that Hugh Laurie carries the show and without him, the show would be dead. The writing is already dead, but as long as Hugh Laurie stays, the show is safe.