A lot of yakkers rely on stunts, shtick or the sort of speechifying that toes one ideological line or another. Not Peter Boyles, who's survived for decades in the Denver market precisely because regular listeners don't always know what he's going to say about a particular issue before he opens his mouth. For that matter, neither does Boyles, an idiosyncratic contrarian who rejects the one-size-fits-all approach. Folks who tune him in weekday mornings may find themselves agreeing -- or disagreeing -- with him when they least expect it. And that's good radio.