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Aside from Ryan Seacrest and Simon Cowell, Joe Buck is probably the highest-profile on-air personality that Fox has under contract. This is the guy, after all, who calls both the World Series and the Super Bowl. And he's also in some hilarious commercials, like this one:

And by "hilarious" I mean, "not at all funny, but at least a guy from the underrated TV show Sons & Daughters is in it."

Anyway, now Buck will get more opportunities at hilarity. From Broadcasting & Cable:

Fox is considering a weekly, half-hour late-night show hosted by its lead sports personality. The network's entertainment division just quietly completed a pilot for the show in New York.

The format currently under consideration would include both interviews and comedy and be set in front of a small studio audience.

My guess is that this will be somewhat more successful than Chevy Chase or Magic Johnson, but not nearly as successful as Joan Rivers. Awful Announcing is hoping this will keep Buck out of the booth, but if it's only a half hour once a week, I don't see that happening. If anything, it just means we can expect to see a lot of promotion for it while we're watching sports.