There's nothing more stressful than waiting weeks for a doctor's appointment -- terrified you're getting sicker, and knowing your short-game is suffering from not reading that complimentary copy of Golf Digest. Helping you see your healer as fast as possible, ZocDoc
Just now up and running in Big D, Zoc's essentially an OpenTable for medical professionals, boasting some 150,000 available sit-downs with area doctors & dentists -- who Dallasites wait an average of 50 days to see, more than twice the national figure (so here's to you for just...being alive). Input your deets/health insurance provider, and Zoc'll upchuck a list of docs/dentists with availability times (some as soon as that day), as well as their credentials and user reviews; click a time and furnish a reason for your appointment, and you're all set, except for that bone sticking out of your leg. Doc's also searchable by specialty, and is updated in real time, meaning you can book 24/7, and instantly snag slots canceled by those who've shifted their appointments, spontaneously healed, or suddenly decided to become Christian Scientists.
Zoc's also just rolled out a free iPhone app providing much of the site's functionality, plus the ability for those who fall ill on-the-go to locate nearby docs via GPS -- though unless their app can spit out that November 2002 interview with Brad Faxon, you should continue to worry about your stroke.