His name is Yasir Qadhi, and masha'Allah he's a very good orator. I've had the pleasure of meeting him a couple of times.
The website he's most active on is MuslimMatters.org. He's also associated with Al-Maghrib institute (they run some courses here in the UK, but they're mainly US based). Another sheikh he often hangs out with is Sheikh Yasir Birjas, and he's run a course on marriage called 'Fiqh of Love', which is very good.
But by far and away the best, I have to say, is Sheikh Alaa's "Home Sweet Home", if you ever get the chance, GO!!