Yeah, I'd say if you're only interested in Matt Smith's era, watch the Eleventh Hour and onwards (Series 5,6,&7)
If you want to start from the beginning of the 2005 revival, watch Rose and onwards (Series 1,2,3,4,Specials,5,6,&7)
But if you want to start from the 05 revival, I would also recommend watching the 1996 movie staring Paul McGann, it does not really lead on to the 05 revival, but if you like the Eccleston and Tennant era's, I'd highly recommend watching this too as it's more like the new episodes than the classic ones, and despite what anyone may say, I jolly well loved it. It's not corny at all, it's great.
However if you want to start off from the classic series too, I'd begin to watch one serial from each of the original seven doctors (as well as the list I've given you above) to see what doctors you like and which you don't. Note that if you favour the McGann, Eccleston, and Tennant doctors, you'd most likely like McCoy (the 7th doctor) best out of the original's.