Season 7; so divisive.  I tend to be a defender of it, but I fully recognize many of its flaws, particularly how it sidelined Xander for some extremely annoying characters.  On the other hand, it had Nathan Fillion.  Which is always good.  Note: although all of these trailers have spoilers, in that they show scenes from late in the season, this one actually shows the final shot of the series, so newcomers may want to wait to watch this until after viewing the series.  Although, that probably holds true for all of these.