Ziplines originally were invented for just two functions: sneaking hamburgers over the Berlin Wall and zazzing up presidential entrances to State of the Union addresses. Hurtle down the most patriotic highway with today's Groupon: for $37, you get a half-hour zipline adventure (a $75 value) for up to 10 people at The Irvine Ranch Outdoor Education Center in Orange, accessible through Irvine Regional Park.

Owned and operated by the Orange County Council, Boy Scouts of America, The Irvine Ranch Outdoor Education Center lays out 210 scenic acres of character-building outdoor adventures. Thrill seekers get a half-hour taste of the wild blue yonder, whizzing across gulfs on high-strung ziplines, just like early Western settlers. Depending on the size of the party, all pseudo-fliers will have multiple chances on the course. Offered daily from 9 a.m. to 12 p.m. and 1 p.m. to 5 p.m., these swift sojourns provide an excellent chance to conquer fears and bond with fellow sky walkers. Participants should be sure to wear sturdy, closed-toe shoes, spinning bowties optional.