Jerry Seinfeld, Buell Theatre

“So I abandoned my groundbreaking sitcom to disappear for a while, only to go back to my stand-up roots ... I mean, what is the deal with that?” OK, so it’s not the best Seinfeld imitation ever, but the lord of observational comedy and god of innovative sitcoms has returned, this time to the stage, and we should all be thankful for that. Sure, the animated movie with the bee was alright, and we could just keep watching him on FOX channel reruns, but let’s face it: The man’s a comic genius, and his hokey but still hilarious schtick positively crackles on a live stage. After a few jokes, you’ll remember why he was the heart and soul of the show — not the racist guy who ran through the door a different, wacky way each time.

What: Jerry Seinfeld performs stand-up.

Where: Buell Theatre, Denver.

When: Saturday, 7 and 9:30 p.m.

Cost: $45-$75.

Info: 303-830-8497 or www.ticketmaster.com.

Colorado Parkour Academy

Parkour, or free running, is a relatively recent sport that nominally involves “moving fluidly through your environment,” but actually involves insane acrobatic feats like running up walls and jumping off of rooftops. In recent films like the latest “James Bond” and the latest “Die-Hard,” we’ve seen villains played by expert French practitioners of the sport leap over bulldozers and bound over impossible obstacles to confound the seemingly leaden heroes. Those incredible acrobatic stunts seem so far removed from reality, but imagine if you could do it yourself? Colorado plays home to one of the nation’s strongest parkour communities, and they’ve decided to open their doors to teach parkour to humble nobodies like us. Lessons range from one-time sessions to 10-week, full-on master classes. If you’ve ever had the desire to be Spider-Man, this is about as close as you can get.

What: Colorado Parkour Academy classes.

Where: Gym Riki, Denver.

When: Daily throughout the summer, beginning Sunday.

Cost: $15-$110.

Info: www.coloradoparkour.com.

The Future of Sustainability with Al Bartlett

The world is going to hell in a handbasket: Global warming, population explosions and demands for resources will push humanity to the brink. Or maybe not. If you want to know what our fate will be, University of Colorado professor Al Bartlett is as sage a prophet as any: He’s been documenting the effects of population growth, peak oil and climate change for over four decades, and he’ll share his wisdom in a special Q&A session with fellow CU professor Richard Brenne, author of global sustainability tome “The Truth About Everything.” While some doomsday scenarios will be explored, expect to hear a lot about what people can do to save their lot from impending crises. If anyone knows, what to do, it’s Bartlett.

What: CU sustainability professor Al Bartlett speaks.

Where: Chatauqua Community House, Boulder.

When: Monday, 7 p.m.

Cost: $5.

Info: www.chautauqua.com.

Old 97’s and Hayes Carll

The glammed-up, spangled and pop-ified country music of today has little in common with the dusty, busted tunes of yore, but even worse, it has a terrible sense of humor. Along comes Texas singer-songwriter Hayes Carll just when we need him most. His weary, broke-down songs have plenty of the Willie-and-Waylon outlaw tunefulness we crave, but they’re also loaded with genuine, honest hilarity. “She Left Me for Jesus” is a blasphemous romp that’s exactly what it sounds like — the funniest and most poignant country song to come out of not-Nashville in decades. Carll performs with country-rock badasses the Old 97’s, who are no strangers to burnt, humorous authenticity themselves.

What: Hayes Carll and Old 97’s perform.

Where: Gothic Theatre, Denver.

When: Tuesday, 8 p.m.

Cost: $21.50.

Info: www.gothictheatre.com.

Save the Ales

Enough, global warming — we’ve freaking had it with you. You’re already melting the glaciers, burning the forests, and otherwise ransacking our most-cherished wilderness places, but that wasn’t enough for you, was it? You had to go and take the one thing we had left: Beer. It’s sad but true, and as global warming threatens hops and barley supplies worldwide, your suds of choice could become an endangered species. But you don’t have to to take it lying down: Drink hearty at Drink Liberally’s Save the Ales benefit. After a requested $8 to $100 donation, you can down $2 pints from boutique breweries like Lefthand and Avery, and listen to beer-centric tunes from the likes of The Mathematically Challenged Quartet and a secret headlining band. All proceeds benefit political action group Drinking Liberally and Environment Colorado. Do it for yourself, and do it for your children.

What: Save the Ales benefit.

Where: Skylark, Denver.

When: Wednesday, 7 p.m.

Cost: $8-$100 donation, $2 pints afterward.

Info: E-mail denver@drinkingliberally.org.