If gambling has lost its thrill, whiz above Las Vegas on the new motorized VooDoo Zip Line at the Rio Hotel and Casino. Take off at Rio's 50-floor Masquerade Tower and jet through the warm Sin City air in a comfy two-seat chair. One minute and 10 seconds later, you'll be atop the 20-story Ipanema Tower, ready for the second part of your round-trip journey back to the Masquerade Tower.