I possibly drink more tea than I drink water. I personally think that it helps me burn fat even though there's still no definitive proof from research. With all the fatty foods that I eat and the lack of exercise in the past year, I should be severly obese. Yet I'm not, so I attribute the fat burning to my tea drinking.
Almost all teas are good for you, so just try out what you like. Some teas that almost anyone can enjoy are Earl Grey, Dragonwell, Jasmine, Oolong. If you're really just drinking for health reasons, then supposedly white tea is the best.