1.) He showed regular daily birth control when talking about the (at the time undecided) Hobby Lobby case and not the morning after pills the case was actually about. It's minor, but intentionally deceiving the audience to not invoke the far more contentious abortion debate.
2.) When discussing the horrible conditions the LBGT community deals with in Nigeria, he kept referring to the actions of one American religious nut-job as "US influence", even coaxing the guest (a well known Nigerian activist) into repeating it, knowing full well that statement implies government directed action like an Ambassador or diplomat would conduct... not one crazed bible-thumper on a travel visa.
It's disappointing. I would expect that kinda thing from a two-bit talking point parrot like Bill Maher, but Oliver's first few shows gave the impression that he wasn't going to stoop to those tactics.
I liked last week's episode but in retrospect I can see where you're coming from. I was impressed though with his guest's story. One thing I do like is how they devote the back half of the show to one topic and go into more detail than other comedy news shows have done before. While there's an obvious slant they present an informative and entertaining piece that the audience might not other have cared to know about. I love Jon Stewart as much as anyone but when he goes off on one subject it comes across as more of a preachy rant.
This is probably my favorite new show of 2014. I was a little disappointed they wrapped up the season this past weekend; I was thinking they would go two more weeks. The salmon bit was silly but I enjoyed it more than I would have expected too.