We need more silly humor in our lives.

And few performers put the accent on the ridiculous better than New Zealand comedy duo Bret McKenzie and Jemaine Clement, who return for the concert special "Flight of the Conchords: Live in London" (10 p.m., HBO, TV-MA), their first appearance on the network since their brilliant eponymous HBO comedy left the air in 2009.

Masters of musical mimicry, they embark on absurd ballads, evoking Cat Stevens or Harry Chapin in a father-son song that derails into a confessional train wreck of pathetic self-delusion.

Other numbers, old and new, evoke the disco pop of the Bee Gees and contemporary hip-hop.

- "Flight of the Conchords" stands in contrast to the thin gruel of humor emanating from "Saturday Night Live" (11:30 p.m., NBC, TV-14).

Now in its 44th season, it relies entirely too much on importing celebrities to offer belabored impersonations of the president, his appointees or figures from his administration.

Last week, "SNL" got a lot of attention by inviting Matt Damon to "do" Judge Brett Kavanaugh.

But do these improvisational riffs rise to the level of satire? Or are they merely part of a partisan echo chamber, reacting to a president who already dominates too much of the conversation?

And is "SNL" a comedy show or a celebrity showcase? You get the sense that all these Trump-centric cameos eclipse the efforts of the ensemble.

Awkwafina hosts "SNL" this week, featuring musical guest Travis Scott.

Saturday's highlights

- College football action includes Washington at UCLA (7:30 p.m., Fox) and Notre Dame at Virginia Tech (8 p.m., ABC).

- The Boston Red Sox host Game 2 of the American League Division Series (8 p.m., TBS).

- A toddler is no match for an angry kitty on "My Cat From Hell" (8 p.m., Animal Planet, TV-PG).

- The opulent, explicit, period costume drama "Versailles" (10 p.m., Ovation, TV-MA) returns for its third and final season.

Saturday series

There goes "The Neighborhood" (8 p.m., CBS, r, TV-PG) ... Two helpings of "Dateline" (8 p.m. and 9 p.m., NBC) ... A famous guest changes everything on "Happy Together" (8:30 p.m., CBS, r, TV-PG) ... A podcaster gets a cosmic poke on "God Friended Me" (9 p.m., CBS, r, TV-PG) ... "48 Hours" (10 p.m., CBS) ... A vintage helping of "Saturday Night Live" (10 p.m., NBC, TV-14).