Nacho Radio's Dave Levora (left) and Darren Pitra

On his morning show on January 14, Darren Pitra asked with mock exasperation: "Haven't we learned enough?"

Just a year ago, the answer to that question would have been simple: Absolutely.

Pitra and Dave Levora have been on-air morning-show partners for nearly 11 years - as "Dave & Darren in the Morning" - so it's no surprise that these old radio pros have an easy rapport, or that they breezed through the show of comedy and conversation without a lull.

There was a bit about a beer brewed with smoked whale testicles, a recurring motif of the perils - sometimes self-inflicted - of being a bus driver, and evidence of both men having way too much familiarity with the live-action Flintstones movies. They roped me in as a guest - sorry, listeners! - and asked off-the-cuff questions that were thoughtful and insightful without ever getting too serious. Their routine is smooth and comfortable - a warm welcome to the day for listeners tuned in to their favorite radio station.

Except that the show wasn't on the radio at all, instead a podcast on Dave & Darren's NachoRadio.com - which was launched in October after Pitra and Levora lost their jobs at Rock 104-9.

So the learning must continue.

James Hetfield in Metallica: Some Kind of MonsterMETALLICA: SOME KIND OF MONSTER

Metallica: Some Kind of Monster has the sort of title guaranteed to repel viewers who might love it the most. This warts-and-all documentary, chronicling the two-plus years devoted to creating Metallica's St. Anger CD, is like the best episode of Behind the Music ever made, offering an intimate look at the relationship between guitarist James Hetfield and drummer Lars Ulrich, and detailing the nightmare involved in getting the group recording again after a five-year hiatus. The movie will be Mecca for metal fans, yet its appeal isn't totally insular. Audiences who may be loath to sit through a doc on any heavy-metal group might not realize what directors Joe Berlinger and Bruce Sinofsky have fashioned here; Some Kind of Monster is one of the finest recordings of the collaborative artistic process ever committed to film, a hard-edged and endlessly fascinating look at the excruciating work that goes into the making of an album. And for those for whom documentaries are even less appealing than heavy metal, it must be said that the film is one of the funniest and most shockingly touching screen works of the year, This Is Spinal Tap with actual human beings at its core. It's a thrilling experience.