Sparkling, are you ? 
Ones to watch this year. Hmmm. It's really a matter of debate on here, and sometimes causes heated discussions here...from the tennis threads we have already done this year, one to watch is most definetely Rafael Nadal. Following on from his brilliant 7th win at Roland Garros, he must be in contention. (And he's our favourite player to drool over watch. 
Also Novak Djokovic, known here as DickDjok, and of course Roger Federer.
Other men : Jo-Wilfred Tsonga, possibly John Isner.
Women is a bit different. As you will discover if you watch the women, there is no real consistency in their game/s, so it could be anyone's Slam for the taking.
Should CremeEgg appear here she can give you much more info than me regarding the women.
Our tennis threads tend to be a mix of fun and frolics, as well as the serious business of discussing the day's play. Things don't really take off till the second week, but the threads here last year were brilliant and produced some great camaraderie, that would put the England Football Team to shame. 