I am and have been for ages... I play both Fantasy and 40k.
In Fantasy I just play straight Orcs & Goblins, I have around 3-4,000 points I'd say, all Night Goblins/Black Orcs.
In 40k I play Orks, but since they can be such a pain in the ass and my army is so old and in such bad condition I play Chaos also. Nurgle/Tzeentch even though I know they aren't supposed to mix you can get around it with the new codex. We just started playing again actually after a 2-3 year hiatus, but now because of the fucking snow I can't get anywhere to play anybody. I just got a Land Raider and a few Obliterators that I can't wait to try out...
Maryland is actually a damn cool place to live if you're in to Warhammer and tabletop wargames and stuff... The Games Workshop National Headquarters is in Glen Burnie, which is like 20 minutes from my house... So basically that means we have access to the entire back catalog of stuff they've made, where everyone else would have to mail order I can just go right to the place and get anything they've ever made regardless of whether or not it's in print.
Necrons aren't very new, they've been around for a while... They are new compared to like Space Marines though, they were a late addition that came out between the transition from 2nd to 3rd edition. They are the robot people that are like Terminators that can come back from the dead. Some of their new shit looks really cool, like the Monolith... It's fucking huge.
I also play Blood Bowl. That game is awesome.