After dutifully earning his bones as one of the more reliable roasters at Comedy Central’s annual events (to Larry the Cable Guy: “Why are you so popular?”), Greg Giraldo finally gets his first one-hour special, and he makes it count. His take-no-prisoners approach is intact here, and in fact he saves a lot of his best bits for third rails like children (they’re fat, sickly and autistic). He does come a tad too close to a bit that popped up in Bill Burr’s act a year or so ago (the ‘I’m not a racist, but…’ routine), but he makes up for it by hammering a “sleepy Rasta” who nodded off in the third row, and by saluting a “gaggle of squawking twats” who refused to let 9/11 ruin their friend’s bachelorette party. The bonus features include the unaired pilot episode of “Adult Content,” a Comedy Central show about, well, porn. It’s a pretty decent show, though it makes sense that they would have had trouble following it up. With any luck, “Midlife Vices” will allow Giraldo to carve out a name for himself as something other than “that roast guy,” because the material here is most worthy.