Trend: Hotel Spa Suites
Who Does It Best: Las Ventanas al Paraiso
Los Cabos, Mexico

Now you can do more than just visit a spa-you can check in to one for your entire stay. The two-bedroom, 3,893- square-foot spa suites at Las Ventanas al Paraiso are decked out with a treatment area and an all-in-one steam room, rain shower, and waterfall. Also on the menu: a butler to schedule your appointments, whether it's a dreamy multi-hour ritual or a Hatha yoga session. (Suites from $2,700 per night, including a $400 daily spa credit; regular rooms from $500 per night; lasventanas.com.)

Trend: Travel Web Sites
Who Does It Best: Kayak.com

More than three-quarters of today's savvy travelers consult the Internet before booking a trip, but there are so many sites to check out, the Web can be more overwhelming than helpful. Two-year-old Kayak.com makes the process easy. The world's largest travel search engine (think of it as the Google of travel), it sifts through information from more than 400 sites with every query you type in. Plus, kayak.com is the only travel Web site that remembers preferences without requiring users to sign in, so you get personalized service each time you search.