Can one desire too much of a good thing? Comedy Central’s documentary-style series, “Nathan for You,” begs this Shakespearian question as it enters its fourth season this week. In the show, comedian...

Bromance, drugs, A-list cameos, a Top 40 musical number, more drugs and vulgar humor — this is not a Christmas movie for people on the nice list. The setup is familiar. It’s the same basic formula...