Things to Do in Piedmont

Today's Groupon gets you two tickets to Hard Rock Cafe's benefit to fight breast cancer on October 16. Four-piece cover band HoneyCircuit will play '70s rock, '80s new wave, '90s pop, and '00s dance hits while you dine on the delectable nacho appetizer included with this Groupon. Hard Rock wants to pack the place for a hard-rocking party that rocks harder than the hard rockers that HoneyCircuit covers such as Gwen Stefani/No Doubt, The Killers, Guns 'N Roses, Queen, Red Hot Chili Peppers, and Duran-Duran would rock hard if those hard-rockers could be there to rock hard for this hard-rocking event. Real Tom: Born in Manitoba, Tom moved to Los Angeles to write music for films, but was forced to move back to Canada when his career didn’t take off. Movie Tom: Born on the mean streets, Tom is arrested for a crime he didn’t commit. To prevent a nuclear bomb only he knows of from detonating, he’ll have to escape…from Alcatraz!

Led by former NBA point guard and first-year head coach Mark Jackson, the Golden State Warriors charge into the second half of the season. Veteran guard Monta Ellis blows by defenders with an average of 22.2 points per game while forward-center David Lee muscles out under-the-basket rivals for an average of 9.7 rebounds per game. Rookie guard Klay Thompson keeps opponents guessing with the ability to drop shots from all over the court and the inexhaustible supply of riddles he declaims during commercial breaks.

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As a surfer and cyclist, Marcel Mijares was drawn to the Pacific Coast many years ago; since then, he’s found little reason to leave. A native of Venezuela, Mijares spoke only Spanish when he made the move, but his love of the Bay Area fueled his drive to acquire the English language and graduate with honors from the Lincoln School of Business. Now, as the owner of High Trails Cyclery, Mijares combines his passion with his determination, sharing both with riders in the heart of Russian Hill. He leads a team of cycling experts equipped to repair cycles and perform tune-ups, overhauls, and bike fittings. Team members also share their expertise during maintenance classes, in which they teach students to care for their own cycles and understand the dangers of trying to change a bicycle's transmission fluid.

At Rhythm Tennis, students learn the ins and outs of the sport with one-on-one instruction from coach Greg, a San Francisco Men's Champion Division winner. Beginners learn to defeat competitors and screen the air for migrating cicadas by mastering fundamentals and strokes such as the forehand, backhand, and volley. Onsite tennis pros also restring rackets and offer tips and tricks on gear.

Today's Groupon tackles professional athletics, professional athletes, and sports hernias with a ticket to the final game of the Oakland Raiders' 2009–10 season for $26 (a $36 value). On Sunday, January 3, at 1:15 p.m., the team that once upset the entire steel industry of Pittsburgh and tamed Cincinnati's Panthera Tigris Tigris looks to end the season on a final high note against the Baltimore Ravens (featuring offensive tackle Michael Oher who is the inspiration for the The Blind Side). You'll be sitting in section 354 and have a $10 food voucher in hand.