I was just browsing through the introductions to kill some time, and I saw Zach had studied in BLCU when he was in China. I studied in Tsinghua university. I thought there might be users planning on going to China who might be interested in our experiences in different schools/universities/provinces/...
I really recommend Tsinghua, they have awesome classes, and their teachers are trained to deal with Occidentals (so you don't get the tragic mind-bashing techniques that Asian-focused teachers use). They are pretty strict, so you can't miss more than 4 or 5 classes a semester, or else you don't get the diploma, which I think is good if you're not strong on discipline. The co-students I met there were some of the most interesting people I've ever met, that's something else I really loved about it. Another thing: you can do your ego a lot of good going there, since each time you'll tell a Chinese that you're studying at Tsinghua he'll be in total awe. Tsinghua is possibly the hardest university to get into for Chinese, with killer requirements. But to get into the Chinese classes is easy as for foreigners ^^
If you go there though, do not go in the dorms, they charge you way too much for what it's worth, you're better off taking an apartment nearby.
Concerning BLCU, I have a few friends who studied there, and people generally have mixed feelings about this uni. It used to be the best one for foreigners, and still enjoys the fame of its past years, but following what I heard I don't think it deserves it anymore. However they have a much nicer campus than Tsinghua (which is huge and cold), and a really great xinjiang restaurant.
As for Beida, I heard it's good, but I don't have much details. I went there twice, and kinda liked the atmosphere of the campus, but that's about it.
The district of those 3 unis is WuDaokou, where you have a lot of universities concentrated. It's a very young and cosmopolitan neighborhood, with devilish clubs and restaurants to go out too (Lush, Propaganda, C13 and D22...mmhhh)
There's one other place that I absolutely recommend if you want to do an internship in China, it's hutong school (http://www.hutong-school.com/). This company provides you with an internship and accommodation together with Chinese lessons. I studied there for a bit, the Chinese lessons are good in beginner, but their advanced students classes were so-so when I went there. The atmosphere is great, it's located in a nice area of Beijing and the people working there are really helpful (airport pickup, visa problems, getting a cellphone, ...)
Well that's it for me, I hope that helps some adventurers :)