NBC’s Last Comic Standing made the penultimate cruelest cut last night, winnowing the field from five to four.

The show also introduced Jay Leno as a guest mentor, although I’m not sure what advice he gave them to help in this particular challenge, nor why our finalists had to fly to Las Vegas to meet him, but that’s their story and they’re sticking to it. Leno actually had some interesting things to say, just not fit for broadcast.

No more wacky or even plausible challenges left.

Now it’s just stand-up comedy. With our judges — Russell Peters, Keenen Ivory Wayans and Roseanne — deciding which four move on to the almost end.

Joe Machi performed first, and was left with a bunch of one-liners after using up bigger chunks in the elimination rounds.

Rod Man wanted to alert us to the terrible nature of babies, particularly the ugly ones.

Rocky LaPorte went the get-t0-know-me route, with a set informing us about his point-of-view as an Italian from Chicago.

Nikki Carr let us know she’s a lesbian, but then let us imagine her having sex with the men from famous horror movies. Oh, the horror!?

Lachlan Patterson rounded out our top five with a chunk on wedding invitations and how much we’re not having them.

The judges left LaPorte out, which leaves the other four comics still standing. I declare ageism! I allege it! What’s the right word for what just happened here?

Would you have these four as your Final Four?