First and second heroics cleared :O
OK, it's taken me a long long time to get to this point, mostly because I've been pretty casual about my multiboxing and also because I was pretty stubborn.
Over the past few weeks I'd log in, clear the first 3 bosses in Gundrak (still can't kill the elemental boss in there) and the first boss in Drak'tharon (can't kill the second boss in there) and call it a night. So occasionally I'd get 4 heroic emblems. I saved these all up and have been able to buy 2 things for each of my guys with them. Needless to say, I was pretty frustrated I couldn't get Gundrak down even though it's considered the entry level heroic.
Well, I decided to give culling of stratholme a try and after a few wipes I was able to clear it! Figuring I'd push my luck, I went into halls of lightning and cleared to the last boss! I couldn't down the boss but I was happy I'd even gotten to him. I went in the following night and cleared both of these instances with no problems.
This is probably pretty small potatoes to most of you, but it's a huge relief to *finally* be able to do some content all the way through on my own.