Environment: EcoHarmony Festival
What better place than Boulder to worship the Earth in a weekend jamboree of all things eco-savvy? Hit the Pearl Street Mall to chat with local companies like Cool Solar that specialize in sustainable practices and products, and score organic goodies from more than 40 vendors. Want to walk the talk? Experts will explain green home building practices so you can leave with practical know-how. Plus, live local acts like singer Pete Kartsounes will provide the festival soundtrack, so grab your bike and a friend and get thee to the People's Republic. Oct. 3-4, Boulder County Courthouse Lawn.
Comedy: Comedy Uncork'd
Give your abs a workout as you laugh the night away at Denver's second annual Comedy Uncork'd. Three of the funniest stand-ups from the Chelsea Lately roundtable will tear up the room, including Heather McDonald, whose side-splitting opening act last year boosted her to headliner. Known for her hilarious parodies of celebs we love to hate—think Sarah Palin and Miley Cyrus—on Lately, McDonald never runs out of ammunition. Funny folks Brad Wollack and Jen Kirkman round out the lineup. Bonus: Proceeds benefit New Genesis, a transitional housing community for Denver's homeless. Oct. 10, Paramount Theatre.
Family: CSO Classic Halloween
No tricks, but there are treats aplenty at this Halloween shindig. Rustle up your best scary getup and make sure your kids are at their spookiest for this family-friendly celebration with the Colorado Symphony Orchestra. The musicians—clad entirely in costume—will perform festive pieces that scream fantastical monsters and eerie magic—Harry Potter and Star Wars tunes have delighted in the past. Before the show, visit the lobby, where your little ones can design and decorate their own masks and wands. The concert kicks off the CSO's Family Series season, with four new shows hitting the stage soon. Oct. 29, Boettcher Concert Hall.
Sports: Avs Opener: Sakic's Adieu
In his 20-season career, Joe Sakic laced up his skates for only one NHL franchise: the Colorado Avalanche (née Quebec Nordiques). You won't see number 19's swift wrist shot this season, but you can pay homage at the Avs opener against San Jose, when Sakic's number will be the third in Avs history to be retired. His ice time may have ended with few fireworks, but c'mon: He nudged the Avs to two Stanley Cups, nabbed Olympic gold with Team Canada, and is eighth on the NHL's all-time scoring list. Let's give the man some love. Oct. 1, Pepsi Center.